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Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
Itwas3:45inthemorningwhenthevotewasfinallytaken.Aftersixmonthsofarguingandfinal16hoursofhotparliamentarydebatesAustralia’’sNorthernTerritorybecamethefirstlegalauthorityintheworldtoallowdoctorstotakethelivesofincurablyiiipatientswhowishtodie.Themeasurepassedbytheconvincingvoteof15to10.AlmostimmediatelywordflashedontheInternetandwaspickeduphalfaworldawaybyJohnHofsessexecutivedirectoroftheRighttoDieSocietyofCanada.Hesentitonviathegroup’’son-lineserviceDeathNET.SaysHofsess:Wepostedbulletinsalldaylongbecauseofcoursethisisn’’tjustsomethingthathappenedinAustralia.It’’sworldhistory. Thefullimportmaytakeawhiletosinkin.TheNTRightsoftheTerminallyIlllawhasleftphysiciansandcitizensaliketryingtodealwithitsmoralandpracticalimplications.Somehavebreathedsighsofrelief;othersincludingchurchesright-w-lifegroupsandtheAustralianMedicalAssociationbitterlyattackedthebillandthehasteofitspassage.Butthefideisunlikelytoturnback.InAustralia―whereanagingpopulationlife-extendingtechnology’’andchangingcommunityattitudeshaveallplayedtheirpart―otherstatesaregoingtoconsidermakingasimilarlawtodealwitheuthanasia.IntheUSandCanadawheretheright-to-diemovementisgatheringstrengthobserversarewaitingforthedominoestostartfalling. UnderthenewNorthernTerritorylawanadultpatientcanrequestdeath―probablybyadeadlyinjectionorpill―toputanendtosuffering.Thepatientmustbediagnosedasterminallyillbytwodoctors.Afteracoolingoffperiodofsevendaysthepatientcansignacertificateofrequest.After48hoursthewishfordeathcanbemet.ForLloydNicksona54-year-oldDarwinresidentsufferingfromlungcancertheNTRightsofTerminallyIlllawmeanshecangetonwithlivingwithoutthehauntingfearofhissufferingaterrifyingdeathfromhisbreathingcondition.I’’mnotafraidofdyingfromaspiritualpointofviewbutwhatIwasafraidofwashowI’’dgobecauseI’’vewatchedpeopledieinthehospitalfightingforoxygenandclawingattheirmaskshesays. Whentheauthorsaysthatobserversarewaitingforthedominoestostartfallinghemeans________.
Throughouthistorygoldhasbeenapreciousmaterialeagerlysoughtandcherished.Itwasprobablythefirstmetaltobeminedbecauseitisbeautifulandimperishablewhichwillalwaysexistorcannotwearoutandbecausebeautifulobjectscanbemadefromit-evenwithprimitivetools.Theamountofgoldknowntoancientpeoplesprobablytotalednotmuchmorethantheamountproducedeachyearbytheworld’’slargestgoldminelocatedintheWitwatersranddistrictofSouthAfrica.StoresofgolddiscoveredbyarchaeologistsinGreeceScythiaandEgyptaswellasthegoldfromIndiantreasuriesinMexicoandPerurepresentedyearsofpatientcollectionofsmallquantitiesfromstreamsandveins矿脉oftenbyslavelabor. Theessentialvalueofgoldhasalwaysbeenknownevenbeforegoldwasusedincoinage.Itremainstheonlyuniversallyrecognizedstandardofvalueininternationalmonetaryexchange.Mostoftheworld’’srefinedgoldisabsorbedbygovernmentsandcentralbankstoprovidebackingforpapercurrency.Buttheamountofgoldusedinartsandinindustryisincreasing.Inadditiontoitsuseforjewelrydecorativefinishesanddentistryitsspecialpropertieshaveledtomanyapplicationsinmodernscienceandtechnology.Surfacecoatingsofgoldprotectearthsatellitesfromheatandcorrosionandcertainelectricalcomponentsandcircuitsofspacecraftaremadeofgoldwhenextremereliabilityisrequired. GoldwasfirstproducedintheUnitedStatesfromthesouthernAppalachianregionbeginningabout1792.Thesedepositsthoughrichwererelativelysmallandwerequicklydepleted.ThediscoveryofgoldatSutter’’sMillinCaliforniasparkedthegoldrushof1849-50.Hundredsofminingcampssprangtolifeasnewdepositswerediscovered.Asaresulttheproductionofgoldincreasedrapidly. DuringWorldWarIandforsomeyearsthereafterannualproductiondeclinedtoabouttwomillionounces.Whenthepriceofgoldwasraisedin1934to$35anounceproductionincreasedrapidly.ShortlyafterthestartofWorldWarⅡgoldmineswereclosedandthegovernmentdidnotpermitthemtoreopenuntil1945.Sincethentheproductionofgoldhasnotexceededtwomillionouncesayear. ThelargestproducinggoldmineintheUnitedStatesistheHomestakeMineinSouthDakotawhichyieldsabout575000ouncesofgoldeachyear.Otherminesscatteredthroughoutvariouspartsoftheworldproduceevenlargeramountsofthishighlyprizedandeagerlysoughtyellowishmaterial. Withrespecttogoldtheauthorfavorsthestatementthat
三个进程P1P2P3互斥使用一个包含NN＞0个单元的缓冲区P1每次用produce生成一个正整数并用put送入缓冲区某一空单元中P2每次用getodd从该缓冲区中取出一个奇数并用countodd统计奇数个数P3每次用geteven从该缓冲区中取出一个偶数并用counteven统计偶数个数请用信号量机制实现这三个进程的同步与互斥活动并说明所定义的信号量的含义要求用伪代码描述
Directions:Readthefollowingtext.Choosethebestwordsfor eachnumberedblankandmarkABCorDonANSWERSIIEET1. Whatcanbesaidofthenormalprocess ofagingfromalinguisticpointofviewIngeneral1 thereisaclearand2relationship:no-onewouldhavemuch difficulty3ababyayoungchildateenagera middle-agedpersonoraveryoldpersonfromataperecording.With children4ispossibleforspecialistsinlanguage developmentandpeopleexperienced5childcaretomake verydetailed6abouthowlanguagecorrelateswithagein theearlyyears.7isknownaboutthepatternsof linguisticchangethataffectolderpeople.Itisplainthatourvoicequality vocabularyandstylealter8wegrowolderbutresearch 9thenatureofthesechangesisinitsearlieststages.However. acertainamountof10isavailableabouttheproduction and11ofspokenlanguagebyveryoldpeopleespecially regardingthephoneticchangesthattakeplace.Speechis 12tobeaffectedbyreductionsinthe13 ofthevocalorgans.Themusclesofthechest14the lungsbecomelesselastictheribs15mobile:asa resultrespiratoryefficiencyatage75isonlyabouthalf16 atage30andthishas17fortheabilityto speakloudlyrhythmicallyandwithgoodtoneInadditionspeechis affectedbypoorermovementofthesoftpalateandchangesinthefacial skeletonespeciallyaroundthemouthandjaw.Thereareothermoregeneral signsofage.Speechrateslowsandfluencymaybemoreerratic.Hearing 18especiallyaftertheearlyfifties.Weakening 19ofmemoryandattentionmayaffecttheabilityto comprehendcomplexspeechpatterns.Butitis20allhad news:vocabularyawarenessmaycontinuetogrowasmaystylisticability—skills innarrationforexample.Andgrammaticalabilityseemstobelittle affected.
如下图所示为一个网络连接的示意图主机1到主机2采用了SLIP网络连接SLIP网络可以传输的最大数据段是296字节主机2和主机3使用了以太网连接 请问 先在主机1和主机3建立起了一条TCP连接请问这条TCP连接的mss值是多少
YouarepreparingfortakingtheentrancetestforMAineconomics.WritealettertothedeanoftheEconomicsSchoolofafamousuniversitytoenquireabout: 1thesubjectstobetested 2thenumberofstudentsforenrollmentand 3anyguidingortrainingcourses. Youshouldwriteabout100wordsonANSWERSHEET2.Donotsignyournameattheendoftheletter.UseLiMinginstead.Youdonotneedtowritetheaddress.10points
Personalityistoalargeextentinherent―A-typeparentsusuallybringaboutA-typeoffspring.Buttheenvironmentmustalsohaveaprofoundeffectsinceifcompetitionisimportanttotheparentsitislikelytobecomeamajorfactorinthelivesoftheirchildren. OneplacewherechildrensoakupAcharacteristicsisschoolwhichisbyitsverynatureahighlycompetitiveinstitution.Toomanyschoolsadoptthewinatallcostsmoralstandardandmeasuretheirsuccessbysportingachievements.Thecurrentpassionformakingchildrencompeteagainsttheirclassmatesoragainsttheclockproducesatwo-layersysteminwhichcompetitiveAtypesseeminsomewaybetterthantheirBtypefellows.Beingtookeentowincanhavedangerousconsequences:rememberthatPheidippidesthefirstmarathonrunnerdroppeddeadsecondsaftersaying:Rejoiceweconquer! Byfartheworstformofcompetitioninschoolsisthedisproportionateemphasisonexaminations.Itisarareschoolthatallowspupilstoconcentrateonthosethingstheydowell.Themeritsofcompetitionbyexaminationaresomewhatquestionablebutcompetitioninthecertainknowledgeoffailureispositivelyharmful. ObviouslyitisneitherpracticalnordesirablethatallAyoungsterschangeintoB’’s.Theworldneedstypesandschoolshaveanimportantdutytotrytofitachild’’spersonalitytohispossiblefutureemployment.Itistopmanagement. Ifthepreoccupationofschoolswithacademicworkwaslessenedmoretimemightbespentteachingchildrensurervalues.Perhapsselectionforthecaringprofessionsespeciallymedicinecouldbemadelessbygoodgradesinchemistryandmorebysuchconsiderationsassensitivityandsympathy.ItissurelyamistaketochooseourdoctorsexclusivelyfromAtypestock.B’’sareimportantandshouldbeencouraged. Theauthorisstronglyopposedtothepracticeofexaminationsatschoolsbecause________________.
Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
Directions:Readthefollowingtext.Choosethebestwordsfor eachnumberedblankandmarkABCorDonANSWERSIIEET1. Whatcanbesaidofthenormalprocess ofagingfromalinguisticpointofviewIngeneral1 thereisaclearand2relationship:no-onewouldhavemuch difficulty3ababyayoungchildateenagera middle-agedpersonoraveryoldpersonfromataperecording.With children4ispossibleforspecialistsinlanguage developmentandpeopleexperienced5childcaretomake verydetailed6abouthowlanguagecorrelateswithagein theearlyyears.7isknownaboutthepatternsof linguisticchangethataffectolderpeople.Itisplainthatourvoicequality vocabularyandstylealter8wegrowolderbutresearch 9thenatureofthesechangesisinitsearlieststages.However. acertainamountof10isavailableabouttheproduction and11ofspokenlanguagebyveryoldpeopleespecially regardingthephoneticchangesthattakeplace.Speechis 12tobeaffectedbyreductionsinthe13 ofthevocalorgans.Themusclesofthechest14the lungsbecomelesselastictheribs15mobile:asa resultrespiratoryefficiencyatage75isonlyabouthalf16 atage30andthishas17fortheabilityto speakloudlyrhythmicallyandwithgoodtoneInadditionspeechis affectedbypoorermovementofthesoftpalateandchangesinthefacial skeletonespeciallyaroundthemouthandjaw.Thereareothermoregeneral signsofage.Speechrateslowsandfluencymaybemoreerratic.Hearing 18especiallyaftertheearlyfifties.Weakening 19ofmemoryandattentionmayaffecttheabilityto comprehendcomplexspeechpatterns.Butitis20allhad news:vocabularyawarenessmaycontinuetogrowasmaystylisticability—skills innarrationforexample.Andgrammaticalabilityseemstobelittle affected.
Directions:Readthefollowingtext.Choosethebestwordsfor eachnumberedblankandmarkABCorDonANSWERSIIEET1. Whatcanbesaidofthenormalprocess ofagingfromalinguisticpointofviewIngeneral1 thereisaclearand2relationship:no-onewouldhavemuch difficulty3ababyayoungchildateenagera middle-agedpersonoraveryoldpersonfromataperecording.With children4ispossibleforspecialistsinlanguage developmentandpeopleexperienced5childcaretomake verydetailed6abouthowlanguagecorrelateswithagein theearlyyears.7isknownaboutthepatternsof linguisticchangethataffectolderpeople.Itisplainthatourvoicequality vocabularyandstylealter8wegrowolderbutresearch 9thenatureofthesechangesisinitsearlieststages.However. acertainamountof10isavailableabouttheproduction and11ofspokenlanguagebyveryoldpeopleespecially regardingthephoneticchangesthattakeplace.Speechis 12tobeaffectedbyreductionsinthe13 ofthevocalorgans.Themusclesofthechest14the lungsbecomelesselastictheribs15mobile:asa resultrespiratoryefficiencyatage75isonlyabouthalf16 atage30andthishas17fortheabilityto speakloudlyrhythmicallyandwithgoodtoneInadditionspeechis affectedbypoorermovementofthesoftpalateandchangesinthefacial skeletonespeciallyaroundthemouthandjaw.Thereareothermoregeneral signsofage.Speechrateslowsandfluencymaybemoreerratic.Hearing 18especiallyaftertheearlyfifties.Weakening 19ofmemoryandattentionmayaffecttheabilityto comprehendcomplexspeechpatterns.Butitis20allhad news:vocabularyawarenessmaycontinuetogrowasmaystylisticability—skills innarrationforexample.Andgrammaticalabilityseemstobelittle affected.
Solarenergyiscalledarenewableresourcebecauseonahumantimescaleitisessentiallyinexhaustibleitisexpectedtolastatleast6.5billionyearswhilethesuncompletesitslifecycle.46Apotentiallyrenewableresourcecanberenewedfairlyrapidlyhourstoseveraldecadesthroughnaturalprocessesexamplesofwhichincludeforesttreesgrasslandgrasseswildanimalsfreshlakeandstreamwatergroundwaterfreshairandfertilesoil. 47OneimportantpotentiallyrenewableresourceforusandotherspeciesisbiologicaldiversityorbiodiversitywhichconsistsofthelifeformsthatcanbestsurvivevarietyofconditionscurrentlyfoundonEarth.Kindsofbiodiversityinclude1geneticdiversityvarietyinthegeneticmakeupamongindividualswithinasinglespecies2speciesdiversityvarietyamongthespeciesoruniqueformsoflifefoundindifferenthabitatsoftheplanetand3ecologicaldiversityvarietyofforestsdesertsgrasslandsstreamslakesoceanswetlandsandotherbiologicalcommunities.48Thisrichvarietyofgenesspeciesandbiologicalcommunitiesgivesusfoodwoodfibersenergyrawmaterialsindustrialchemicalsandmedicines―allofwhichpourhundredsofbillionsofdollarsintotheworldeconomyeachyear.Earth’’svastlist’’oflifeformsandbiologicalcommunitiesalsoprovidesfreerecyclingandpurificationservicesandnaturalpestcontrol. Potentiallyrenewableresourceshowevercanbeexhausted.49Thehighestrateatwhichapotentiallyrenewableresourcecanbeusedindefinitelywithoutreducingitsavailablesupplyiscalleditssustainableyield.Ifaresource’’snaturalreplacementrateisexceededtheavailablesupplybeginstoshrink―aprocessknownasenvironmentaldegradation. Severaltypesofenvironmentaldegradationcanchangepotentiallyrenewableresourcesintononrenewableorunusableresources.IntheUnitedStatesone-fourthofthegroundwaterwithdrawneachyearisnotreplenishedfilledupagain.Between25%and50%oftheworld’’swetlands55%intheU.S.havebeendrainedbuiltuponorseriouslypolluted.Almosthalfoftheworld’’stropicalforestshavebeencleared.Thousandsofwildlifespeciesbecomeextincteachyearmostlybecauseofhumanactivities.Ifhabitatdestructioncontinuesatpresentratesasmanyas1.5millionspeciescoulddisappearoverthenext25years―adrasticlossinvitalEarthcapital.50Theseexampleshelpexplainwhymostenvironmentalscientistsbelievethatoverthenextfewdecadesthedangerofdegradationandexhaustionisgreatestforpotentiallyrenewableresourcesnotnonrenewableresourcesexceptforpetroleumandperhapsafewscarcemineralsforwhichwecan’’tfindeconomicallyandenvironmentallyacceptablesubstitutes.
某计算机有8个主设备需要竞争总线的使用权其设备号为0～7现欲设计其判优控制方法试回答下述问题 集中式总线判优控制与分布式总线判优控制的区别是什么
Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
如下图所示为一个网络连接的示意图主机1到主机2采用了SLIP网络连接SLIP网络可以传输的最大数据段是296字节主机2和主机3使用了以太网连接 请问 为了使IP不分片主机1可以在TCP包中承载多少数据
Itwas3:45inthemorningwhenthevotewasfinallytaken.Aftersixmonthsofarguingandfinal16hoursofhotparliamentarydebatesAustralia’’sNorthernTerritorybecamethefirstlegalauthorityintheworldtoallowdoctorstotakethelivesofincurablyiiipatientswhowishtodie.Themeasurepassedbytheconvincingvoteof15to10.AlmostimmediatelywordflashedontheInternetandwaspickeduphalfaworldawaybyJohnHofsessexecutivedirectoroftheRighttoDieSocietyofCanada.Hesentitonviathegroup’’son-lineserviceDeathNET.SaysHofsess:Wepostedbulletinsalldaylongbecauseofcoursethisisn’’tjustsomethingthathappenedinAustralia.It’’sworldhistory. Thefullimportmaytakeawhiletosinkin.TheNTRightsoftheTerminallyIlllawhasleftphysiciansandcitizensaliketryingtodealwithitsmoralandpracticalimplications.Somehavebreathedsighsofrelief;othersincludingchurchesright-w-lifegroupsandtheAustralianMedicalAssociationbitterlyattackedthebillandthehasteofitspassage.Butthefideisunlikelytoturnback.InAustralia―whereanagingpopulationlife-extendingtechnology’’andchangingcommunityattitudeshaveallplayedtheirpart―otherstatesaregoingtoconsidermakingasimilarlawtodealwitheuthanasia.IntheUSandCanadawheretheright-to-diemovementisgatheringstrengthobserversarewaitingforthedominoestostartfalling. UnderthenewNorthernTerritorylawanadultpatientcanrequestdeath―probablybyadeadlyinjectionorpill―toputanendtosuffering.Thepatientmustbediagnosedasterminallyillbytwodoctors.Afteracoolingoffperiodofsevendaysthepatientcansignacertificateofrequest.After48hoursthewishfordeathcanbemet.ForLloydNicksona54-year-oldDarwinresidentsufferingfromlungcancertheNTRightsofTerminallyIlllawmeanshecangetonwithlivingwithoutthehauntingfearofhissufferingaterrifyingdeathfromhisbreathingcondition.I’’mnotafraidofdyingfromaspiritualpointofviewbutwhatIwasafraidofwashowI’’dgobecauseI’’vewatchedpeopledieinthehospitalfightingforoxygenandclawingattheirmaskshesays. Theauthor’’sattitudetowardseuthanasiaseemstobethatof________.
Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
Wesometimeshearthatessaysareanold-fashionedform.thatso-and-soisthelastessayistbutthefactsofthemarketplacearguequiteotherwise.Essaysofnearlyanykindaresomucheasierthanshortstoriesforawritertosellsomanymoreseeprintit’’sstrangethatthoughtwofineanthologiescollectionsremainthatpublishtheyear’’sbeststoriesnocomparablecollectionexistsforessays.Suchchangesinthereadingpublic’’stastearen’’talwaystothegoodneedlesstosay.Theartoftellingstoriespredatedevencavepaintingsurely;andifweeverfindourselveslivingincavesagainitwithpaintinganddrummingwillbetheonlyartleftaftermoviesnovelsphotographyessaysbiographyandalltheresthavegonedownthedrain―thearttobuildfrom. Essayshoweverhangsomewhereonalinebetweentwosturdypoles:thisiswhatIthinkandthisiswhatIam.Autobiographieswhicharen’’tnovelsaregenerallyextendedessaysindeed.Apersonalessayislikethehumanvoicetalkingitsorderbeingthemind’’snaturalflowinsteadofasystematizedoutlineofideas.Thoughmorechangeableorinformalthananarticleortreatisesomewhereitcontainsapointwhichisitsrealcenterevenifthepointcouldn’’tbeutteredinfewerwordsthantheessayisthasused.Essaysdon’’tusuallyboildowntoasummaryasarticlesdoandthestyleofthewriterhasanaptoitacombinationofpersonalityandoriginalityandenergeticlooseendsthatstanduplikethenap绒毛onapieceofwoolandcan’’tbebrushedflat.Essaysbelongtotheanimalkingdomwithasurfacethatgeneratessparkslikeacoatoffurcomparedwiththeflatconventionalcottonofthemagazinearticlewriterwhoworksinthevegetablekingdominstead.Butessaysontheotherhandmayhavefewerlevelsthanfictionbecausewearenotsupposedtoarguemuchabouttheirmeaning.Intheolddistinctionbetweenteachingandstorytellingtheessayisthowevercleverlyhetriestoconcealhisintentionsisabitofateacherorreformerandanessayisintendedtoconveythesamepointtoeachofus. Anessayistdoesn’’thavetotellthewholetruthandnothingbutthetruth;hecanshapeorshavehismemoriesaslongasthepurposeisservedofexplainingatruthfulpoint.Apersonalessayfrequentlyisnotautobiographicalataltbutwhatitdoeskeepincommonwithautobiographyisthatthroughitstoneandtumblingprogressionitconveysthequalityoftheauthor’’smind.Nothinggetsintheway.Becauseessaysaredirectlyconcernedwiththemindandthemind’’speculiaritytheveryfreedomthemindpossessesisconferredonthisbranchofliteraturethatdoeshonortoitandthefascinationofthemindisthefascinationoftheessay. TheauthorsuggeststhatiftheStoneAgeshouldcomeupagain
Personalityistoalargeextentinherent―A-typeparentsusuallybringaboutA-typeoffspring.Buttheenvironmentmustalsohaveaprofoundeffectsinceifcompetitionisimportanttotheparentsitislikelytobecomeamajorfactorinthelivesoftheirchildren. OneplacewherechildrensoakupAcharacteristicsisschoolwhichisbyitsverynatureahighlycompetitiveinstitution.Toomanyschoolsadoptthewinatallcostsmoralstandardandmeasuretheirsuccessbysportingachievements.Thecurrentpassionformakingchildrencompeteagainsttheirclassmatesoragainsttheclockproducesatwo-layersysteminwhichcompetitiveAtypesseeminsomewaybetterthantheirBtypefellows.Beingtookeentowincanhavedangerousconsequences:rememberthatPheidippidesthefirstmarathonrunnerdroppeddeadsecondsaftersaying:Rejoiceweconquer! Byfartheworstformofcompetitioninschoolsisthedisproportionateemphasisonexaminations.Itisarareschoolthatallowspupilstoconcentrateonthosethingstheydowell.Themeritsofcompetitionbyexaminationaresomewhatquestionablebutcompetitioninthecertainknowledgeoffailureispositivelyharmful. ObviouslyitisneitherpracticalnordesirablethatallAyoungsterschangeintoB’’s.Theworldneedstypesandschoolshaveanimportantdutytotrytofitachild’’spersonalitytohispossiblefutureemployment.Itistopmanagement. Ifthepreoccupationofschoolswithacademicworkwaslessenedmoretimemightbespentteachingchildrensurervalues.Perhapsselectionforthecaringprofessionsespeciallymedicinecouldbemadelessbygoodgradesinchemistryandmorebysuchconsiderationsassensitivityandsympathy.ItissurelyamistaketochooseourdoctorsexclusivelyfromAtypestock.B’’sareimportantandshouldbeencouraged. Fromthepassagewecandrawtheconclusionthat________________.
设计一个算法求图的中心点设v是有向图G的一个顶点把v的偏心度定义为 MAX{从w到v的最短距离|w属于VG} 如果v是有向图G中具有的最小偏心度的顶点则称顶点v是G的中心点
Solarenergyiscalledarenewableresourcebecauseonahumantimescaleitisessentiallyinexhaustibleitisexpectedtolastatleast6.5billionyearswhilethesuncompletesitslifecycle.46Apotentiallyrenewableresourcecanberenewedfairlyrapidlyhourstoseveraldecadesthroughnaturalprocessesexamplesofwhichincludeforesttreesgrasslandgrasseswildanimalsfreshlakeandstreamwatergroundwaterfreshairandfertilesoil. 47OneimportantpotentiallyrenewableresourceforusandotherspeciesisbiologicaldiversityorbiodiversitywhichconsistsofthelifeformsthatcanbestsurvivevarietyofconditionscurrentlyfoundonEarth.Kindsofbiodiversityinclude1geneticdiversityvarietyinthegeneticmakeupamongindividualswithinasinglespecies2speciesdiversityvarietyamongthespeciesoruniqueformsoflifefoundindifferenthabitatsoftheplanetand3ecologicaldiversityvarietyofforestsdesertsgrasslandsstreamslakesoceanswetlandsandotherbiologicalcommunities.48Thisrichvarietyofgenesspeciesandbiologicalcommunitiesgivesusfoodwoodfibersenergyrawmaterialsindustrialchemicalsandmedicines―allofwhichpourhundredsofbillionsofdollarsintotheworldeconomyeachyear.Earth’’svastlist’’oflifeformsandbiologicalcommunitiesalsoprovidesfreerecyclingandpurificationservicesandnaturalpestcontrol. Potentiallyrenewableresourceshowevercanbeexhausted.49Thehighestrateatwhichapotentiallyrenewableresourcecanbeusedindefinitelywithoutreducingitsavailablesupplyiscalleditssustainableyield.Ifaresource’’snaturalreplacementrateisexceededtheavailablesupplybeginstoshrink―aprocessknownasenvironmentaldegradation. Severaltypesofenvironmentaldegradationcanchangepotentiallyrenewableresourcesintononrenewableorunusableresources.IntheUnitedStatesone-fourthofthegroundwaterwithdrawneachyearisnotreplenishedfilledupagain.Between25%and50%oftheworld’’swetlands55%intheU.S.havebeendrainedbuiltuponorseriouslypolluted.Almosthalfoftheworld’’stropicalforestshavebeencleared.Thousandsofwildlifespeciesbecomeextincteachyearmostlybecauseofhumanactivities.Ifhabitatdestructioncontinuesatpresentratesasmanyas1.5millionspeciescoulddisappearoverthenext25years―adrasticlossinvitalEarthcapital.50Theseexampleshelpexplainwhymostenvironmentalscientistsbelievethatoverthenextfewdecadesthedangerofdegradationandexhaustionisgreatestforpotentiallyrenewableresourcesnotnonrenewableresourcesexceptforpetroleumandperhapsafewscarcemineralsforwhichwecan’’tfindeconomicallyandenvironmentallyacceptablesubstitutes.
Wesometimeshearthatessaysareanold-fashionedform.thatso-and-soisthelastessayistbutthefactsofthemarketplacearguequiteotherwise.Essaysofnearlyanykindaresomucheasierthanshortstoriesforawritertosellsomanymoreseeprintit’’sstrangethatthoughtwofineanthologiescollectionsremainthatpublishtheyear’’sbeststoriesnocomparablecollectionexistsforessays.Suchchangesinthereadingpublic’’stastearen’’talwaystothegoodneedlesstosay.Theartoftellingstoriespredatedevencavepaintingsurely;andifweeverfindourselveslivingincavesagainitwithpaintinganddrummingwillbetheonlyartleftaftermoviesnovelsphotographyessaysbiographyandalltheresthavegonedownthedrain―thearttobuildfrom. Essayshoweverhangsomewhereonalinebetweentwosturdypoles:thisiswhatIthinkandthisiswhatIam.Autobiographieswhicharen’’tnovelsaregenerallyextendedessaysindeed.Apersonalessayislikethehumanvoicetalkingitsorderbeingthemind’’snaturalflowinsteadofasystematizedoutlineofideas.Thoughmorechangeableorinformalthananarticleortreatisesomewhereitcontainsapointwhichisitsrealcenterevenifthepointcouldn’’tbeutteredinfewerwordsthantheessayisthasused.Essaysdon’’tusuallyboildowntoasummaryasarticlesdoandthestyleofthewriterhasanaptoitacombinationofpersonalityandoriginalityandenergeticlooseendsthatstanduplikethenap绒毛onapieceofwoolandcan’’tbebrushedflat.Essaysbelongtotheanimalkingdomwithasurfacethatgeneratessparkslikeacoatoffurcomparedwiththeflatconventionalcottonofthemagazinearticlewriterwhoworksinthevegetablekingdominstead.Butessaysontheotherhandmayhavefewerlevelsthanfictionbecausewearenotsupposedtoarguemuchabouttheirmeaning.Intheolddistinctionbetweenteachingandstorytellingtheessayisthowevercleverlyhetriestoconcealhisintentionsisabitofateacherorreformerandanessayisintendedtoconveythesamepointtoeachofus. Anessayistdoesn’’thavetotellthewholetruthandnothingbutthetruth;hecanshapeorshavehismemoriesaslongasthepurposeisservedofexplainingatruthfulpoint.Apersonalessayfrequentlyisnotautobiographicalataltbutwhatitdoeskeepincommonwithautobiographyisthatthroughitstoneandtumblingprogressionitconveysthequalityoftheauthor’’smind.Nothinggetsintheway.Becauseessaysaredirectlyconcernedwiththemindandthemind’’speculiaritytheveryfreedomthemindpossessesisconferredonthisbranchofliteraturethatdoeshonortoitandthefascinationofthemindisthefascinationoftheessay. EssaysarecharacterizedbyallofthefollowingEXCEPT
Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
Throughouthistorygoldhasbeenapreciousmaterialeagerlysoughtandcherished.Itwasprobablythefirstmetaltobeminedbecauseitisbeautifulandimperishablewhichwillalwaysexistorcannotwearoutandbecausebeautifulobjectscanbemadefromit-evenwithprimitivetools.Theamountofgoldknowntoancientpeoplesprobablytotalednotmuchmorethantheamountproducedeachyearbytheworld’’slargestgoldminelocatedintheWitwatersranddistrictofSouthAfrica.StoresofgolddiscoveredbyarchaeologistsinGreeceScythiaandEgyptaswellasthegoldfromIndiantreasuriesinMexicoandPerurepresentedyearsofpatientcollectionofsmallquantitiesfromstreamsandveins矿脉oftenbyslavelabor. Theessentialvalueofgoldhasalwaysbeenknownevenbeforegoldwasusedincoinage.Itremainstheonlyuniversallyrecognizedstandardofvalueininternationalmonetaryexchange.Mostoftheworld’’srefinedgoldisabsorbedbygovernmentsandcentralbankstoprovidebackingforpapercurrency.Buttheamountofgoldusedinartsandinindustryisincreasing.Inadditiontoitsuseforjewelrydecorativefinishesanddentistryitsspecialpropertieshaveledtomanyapplicationsinmodernscienceandtechnology.Surfacecoatingsofgoldprotectearthsatellitesfromheatandcorrosionandcertainelectricalcomponentsandcircuitsofspacecraftaremadeofgoldwhenextremereliabilityisrequired. GoldwasfirstproducedintheUnitedStatesfromthesouthernAppalachianregionbeginningabout1792.Thesedepositsthoughrichwererelativelysmallandwerequicklydepleted.ThediscoveryofgoldatSutter’’sMillinCaliforniasparkedthegoldrushof1849-50.Hundredsofminingcampssprangtolifeasnewdepositswerediscovered.Asaresulttheproductionofgoldincreasedrapidly. DuringWorldWarIandforsomeyearsthereafterannualproductiondeclinedtoabouttwomillionounces.Whenthepriceofgoldwasraisedin1934to$35anounceproductionincreasedrapidly.ShortlyafterthestartofWorldWarⅡgoldmineswereclosedandthegovernmentdidnotpermitthemtoreopenuntil1945.Sincethentheproductionofgoldhasnotexceededtwomillionouncesayear. ThelargestproducinggoldmineintheUnitedStatesistheHomestakeMineinSouthDakotawhichyieldsabout575000ouncesofgoldeachyear.Otherminesscatteredthroughoutvariouspartsoftheworldproduceevenlargeramountsofthishighlyprizedandeagerlysoughtyellowishmaterial. Itcanbeinferredfromthetextthat
Ateverystageofdevelopmentclothescanhelpestablishaperson’’sidentityforhimselfandforthosewithwhomheinteracts.Thechildhoodgameofdressingupinparents’’1providestheopportunityforthechildto2theroleshewillbe3toplayinadultlife. Thedegree4whichapersonchoosesclothesthat5theroleswillaffecthisperformanceinthoseroles.Clothesareanimportantfactorindeveloping6ofself-confidenceandself-respect7whenyoulookgoodyoufeelgood.Formostpeopleclothesareoftenasourceof8reactionfromotherssinceinourculturewearemore9tocomplimentapersononhis10thanonother11oftheself MostAmericansalso12thataproperappearanceandproperdressarethekeys13associationwiththerightcrowdwhich14opensthedoorstojobadvancementincreasedincomeandgreaterprestige. Ourclothingneedsare15byamultitudeofcircumstancesbecausebuyingmotivesare16simple.Thefirststepinthedecision-makingprocessistomakea17orderingofthethingsthatareimportanttous.Ifapersonrecognizesand18theprioritiesofhisvalues―e.g.thathisstatusandprestigemaybemoreimportantthanhisphysicalcomfort―his19ofclothingisnotonlysimplifiedbutmorelikelyto20himgreatersatisfaction.
Throughouthistorygoldhasbeenapreciousmaterialeagerlysoughtandcherished.Itwasprobablythefirstmetaltobeminedbecauseitisbeautifulandimperishablewhichwillalwaysexistorcannotwearoutandbecausebeautifulobjectscanbemadefromit-evenwithprimitivetools.Theamountofgoldknowntoancientpeoplesprobablytotalednotmuchmorethantheamountproducedeachyearbytheworld’’slargestgoldminelocatedintheWitwatersranddistrictofSouthAfrica.StoresofgolddiscoveredbyarchaeologistsinGreeceScythiaandEgyptaswellasthegoldfromIndiantreasuriesinMexicoandPerurepresentedyearsofpatientcollectionofsmallquantitiesfromstreamsandveins矿脉oftenbyslavelabor. Theessentialvalueofgoldhasalwaysbeenknownevenbeforegoldwasusedincoinage.Itremainstheonlyuniversallyrecognizedstandardofvalueininternationalmonetaryexchange.Mostoftheworld’’srefinedgoldisabsorbedbygovernmentsandcentralbankstoprovidebackingforpapercurrency.Buttheamountofgoldusedinartsandinindustryisincreasing.Inadditiontoitsuseforjewelrydecorativefinishesanddentistryitsspecialpropertieshaveledtomanyapplicationsinmodernscienceandtechnology.Surfacecoatingsofgoldprotectearthsatellitesfromheatandcorrosionandcertainelectricalcomponentsandcircuitsofspacecraftaremadeofgoldwhenextremereliabilityisrequired. GoldwasfirstproducedintheUnitedStatesfromthesouthernAppalachianregionbeginningabout1792.Thesedepositsthoughrichwererelativelysmallandwerequicklydepleted.ThediscoveryofgoldatSutter’’sMillinCaliforniasparkedthegoldrushof1849-50.Hundredsofminingcampssprangtolifeasnewdepositswerediscovered.Asaresulttheproductionofgoldincreasedrapidly. DuringWorldWarIandforsomeyearsthereafterannualproductiondeclinedtoabouttwomillionounces.Whenthepriceofgoldwasraisedin1934to$35anounceproductionincreasedrapidly.ShortlyafterthestartofWorldWarⅡgoldmineswereclosedandthegovernmentdidnotpermitthemtoreopenuntil1945.Sincethentheproductionofgoldhasnotexceededtwomillionouncesayear. ThelargestproducinggoldmineintheUnitedStatesistheHomestakeMineinSouthDakotawhichyieldsabout575000ouncesofgoldeachyear.Otherminesscatteredthroughoutvariouspartsoftheworldproduceevenlargeramountsofthishighlyprizedandeagerlysoughtyellowishmaterial. Todevelophisideastheauthoruses
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