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下图为教案备课库电磁学中的一些原理图，它们工作原理相同的是（ ）
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如图所示是演示电磁学原理及其应用的示意图以下说法中正确的是
利用甲实验的原理可制成丙装置
利用乙实验的原理可制成丁装置
丙装置可将内能转化为电能
丁装置可将机械能转化为电能
二十世纪物理学的两大基石是
相对论和量子物理
经典力学和相对论
经典电磁学和量子物理
经典力学和经典电磁学
玻璃液位计是最早而又简单的一种直读式液位计它是根据的原理制造的
浮力
光学
连通器
电磁学
质谱仪是利用原理使带电的样品离子按质荷比进行分离的装置
运行学
力学
光学
电磁学
以下关于电磁学知识的说法错误的是
磁体上磁性最强的部位叫磁极，任何磁体都有北极和南极
电动机的工作原理是通电线圈在磁场中受力而转动，其能量的转化过程是机械能转化为电能
发现电磁感应现象的是英国物理学家法拉第
发电机是利用电磁感应现象制成的，其能量的转化过程是机械能转化为电能
如图为手机无线充电的原理图下列哪种装置的工作原理与其相同
电磁炉
电动机
回旋加速器
速度选择器
就是以屏面布置图为基础以原理图为依据而绘制成得接线图就是一种 指导屏柜上配线工作得图纸
屏面布置图
安装接线图
归总式原理图
现代物理学的基础是①牛顿力学②相对论③量子理论④电磁学
①②
②③
①③
②④
质谱仪是利用原理使带电样品离子按质荷比进行分离的装置
运行学
力学
光学
电磁学
是以屏面布置图为基础以原理图为依据而绘制成的接线图是一种指导屏柜上配线工作的图纸
安装接线图
屏面布置图
归总式原理图
展开式原理图
下列物理学分支学科中形成时间最早的是
力学
热学
电磁学
相对论
________是以屏面布置图为基础以原理图为依据而绘制成的接线图是一种指导屏柜上配线工作的图 纸
安装接线图
屏面布置图
归总式原理图
展开式原理图
是以屏面布置图为基础以原理图为依据而绘制成的接线图是一 种指导屏柜上配线工作的图纸
安装接线图
屏面布置图
归总式原理图
下图是演示电磁学原理及其应用的示意图以下说法中正确的是
利用甲实验的原理可制成丙装置
利用乙实验的原理可制成丁装置
丙装置可将内能转化为电能
丁装置可将机械能转化为电能
-----是以屏面布置图为基础以原理图为依据而绘制成的接线图是一种指导屏柜上配线 工作的图纸
安装接线團
屏面布置图
归总式原理图
目前常用的地下管道探测仪是根据原理探测的
声学
力学
电磁学
热成像
下面是演示电磁学原理及其应用的示意图以下说法正确的是
利用甲实验的原理可制成丙装置
利用乙实验的原理可制成丁装置
丙装置可将内能转化为电能
丁装置可将机械能转化为电能
下面是有关电磁学现象或应用的图示其中说法正确的是
图甲所示实验是其它形式的能转化为电能
“动圈式”话筒的原理与乙图的工作原理一样
生活中的“喇叭”与丙图没有任何联系
丁实验表明磁场对电流有力的作用
表明了电气控制系统的工作原理按工作原理和动作顺序安排 各元件的位置并使用统一的符号文字和画法来表示电
设备原理图
电气原理图
机械原理图
控制原理图
图3是电磁学中很重要的三个实验装置图以下说法正确的是
物理学家法拉第进行甲图实验发现了电流的磁效应
乙图实验装置是电动机的原理图
丙图中，导体ab受到的磁场力方向与通过它的电流方向无关
“K.歌”用的话筒利用的是乙图的原理将声音信号变成电流信号
图3
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Partlyduetoahistoricaldevelopmentmarkedbyworldwidecolonialismurbanizationandglobalizationinthecourseofthiscenturyhumankindislikelytoexperienceitsmostextremeculturalloss.AsK.DavidHarrisonnotesinWhenLanguagesDieThelastspeakersofprobablyhalfoftheworld'slanguagesarealivetoday.Theirchildrenorgrandchildrenarepressuredtospeakonlythedominantlanguageoftheircommunityorcountry.Underoneestimatemorethan50%ofthe6900orsolanguagesidentifiednowadaysareexpectedtobecomeextinctinamatterofafewdecades. Theprecisecriteriaforwhatcountsasadistinctlanguagearecontroversial﹣especiallythoseregardingcloselyrelatedlinguisticsystemswhichareofteninaccuratelyreferredtoasdialects方言ofthesamelanguage.Theproblemiscomplicatedbytheinsufficiencyofstudiesaboutthegrammarofmanyoftheworld'sendangeredlanguages.Inadditionfromacognitivestandpointanytwogroupsofindividualswhoselanguagesaremutuallyunderstandablemayinfacthavedistinctmentalgrammars. Asacognitivesystemalanguageshowsdynamicpropertiesthatcannotexistindependentlyofitsspeakers.ThisisthesenseinwhichtheAnatolianlanguagesandDalmatianareextinct.Thereforelanguagepreservationdependsonthemaintenanceofthenative﹣speakinghumangroups.Unfortunatelythemostacceleratedlossofdistinctlanguagestakesplacewhereeconomicdevelopmentisrapidworseningthebreakdownofminoritycommunitiesthatspeakdifferentlanguages.InthisperspectivealanguageoftenbeginstodielongbeforethepassingofthelastspeakerNewgenerationsmaystartusingitonlyforlimitedpurposesincreasinglyshiftingtothecommunity'sdominantlanguage.Inthisprocessknowledgeofthedyinglanguageerodesbothattheindividuallevelandatthecommunitylevel. Justasanecosystembecomeslessrichbytheextinctionofaspeciessotoodoesasocietywiththeextinctionofalanguage.PresentingmanycasestudiesHarrisonalinguistatSwarthmoreCollegearguesthattheextinctionofacommunity'slanguageinvolvesmajorlossofknowledgeofitsculturalheritagee.g.historyfolkloreliteratureandmusicandofitsunderstandingofthelocalflorafaunaandecosystem.Stillalthoughtheseclosetiesdoexistthemaintenanceofalanguageandofotheraspectsofculturalheritagearenotalwaysmutuallydependent.Culturalchangecansometimesbethebestguaranteethatagroupwillbeabletomaintainitslanguageandevensurvive.MajorworldlanguagesincludingEnglishFrenchHindi﹣UrduandSpanishachieveddominantstatuspartlybecauseoftheirspeakers'abilitytoovercomebymeansofculturalortechnologicalchangethechallengesandthreatsfromtheirenvironmentincludingotherpeople. Linguisticdiversityitselfmaybetheworstlossatstakebecauseitmaybethemostpromisingandprecisesourceofevidencefortherangeofvariationallowedintheorganizationofthehumancognitivesystem.ForinstanceHarrisondiscussesmanystrategiesforcontrollingquantitiesacrosslanguagesoftenendangeredones.Therapidlossoflinguisticdiversitysubstantiallyblockscomparativeinvestigationaboutthemultiplewaysinwhichasinglecognitivedomain领域canbeorganized. Linguistsarewellawarethattheireffortsalonecannotpreventthisloss.Communityinvolvementespeciallywithgovernmentsupporthasprovenessentialinslowingorevenreversinglanguagelossindifferentcasese.g.BasqueandIrish.Cruciallyendangeredlanguagesmustbeacquiredbynewgenerationsofspeakers.HerethebiologicalmetaphoradoptedbyHarrisonappliesappropriately﹣documentationofdeadlanguagesissimilartoafossilrecordprovidingonlypartialcluesaboutcomplexcognitivesystems. 1Accordingtothefirstparagraphlanguageloss. A.isexpectedtooccurinafewcenturies B.isthemostextremeculturallosspeoplehaveexperienced C.occursinlessthanhalfoftheworld's6900languages D.iscausedpartlybycolonialismurbanizationandglobalization 2Oneofthedifficultiesindifferentiatingonelanguagefromanotheristhat. A.onelanguagemayhavemanydialects B.theyaredialectsofthesamelanguages C.grammarstudyonsomeendangeredlanguagesisnotenough D.grammarsreflectedbylanguagesaretotallydifferent 3Thestartoflanguagedyingisindicatedby. A.theofficialbanonspeakingit B.thedisappearanceofitslastspeakers C.itsnewgenerations'decreaseduseofit D.thefactthatnewgenerationsstopusingit 4Whichofthefollowinghastheclosestmeaningtotheworderodesinthethirdparagraph? A.fades B.extends C.erupts D.evolves 5Measuresthatcanbetakentopreventlanguagelossinclude. A.conductingcomparativeinvestigationacrosslanguages B.turningendangeredlanguagesintodominantlanguages C.relyingonthejointeffortsoflinguistsandgovernment D.protectingminoritygroupsbyslowingeconomicgrowth 6Wecaninferfromthemetaphorinthelastparagraphthat. A.fossilrecordsgiveacompletepictureofancientlives B.deadlanguagesaresimilartofossilsinbiologicalsense C.deadlanguagescanremainaliveiftheyaredocumentedproperly D.documentationisnotenoughforustounderstanddeadlanguages
Oursocietywouldbebetteroffbutforthefactthattheeconomybythecurrentglobalfinancialcrisis. A.hadbeenaffected B.wereaffected C.shouldbeaffected D.isaffected
Thepurposeofamapistoexpressgraphicallytherelationsofpointsandfeaturesontheearth'ssurfacetoeachother.Thesearedeterminedbydistanceanddirection.Inearlytimesdistancewasoftenexpressedinunitsoftimeforexamplesomanyhours'marchoraday'sjourneybyriverbutsuchmeasurementsgavemoreinformationabouttherelativeeaseofcrossingthelocalterrainthantheydidaboutactualdistance.TheotherelementisdirectionbutfortheordinarytravellerwhosemainconcernwasWheredoIgofromhere?andHowfarawayisit?theaccuraterepresentationofdirectionwasnotofprimaryimportance.Partlyforthisreasonwrittenitineraries行程foralongtimerivaledmaps.Eventodaycertaintypesofmapsforexamplethoseshowingrailwaysystemsmaymakelittleattempttoshowtruedirections.Similarlyobviouslandmarksalongaroutewereatfirstindicatedbysignsrealisticorconventional惯常的andvariedinsizetoindicatetheirimportance.Clearlytheconventionsemployedvariedwiththepurposeofthemapandalsofromplacetoplacesothatinstudyingearlymapsthefirstessentialistounderstandtheparticularconventionemployed. Thehistoryofcartography制图islargelythatoftheincreaseintheaccuracywithwhichtheseelementsofdistanceanddirectionaredeterminedandinthecomprehensivenessofthemapcontent.Inthisdevelopmentcartographyhascalledinothersciencestoitsaid.Forexampleinsteadofdeterminingdirectionbyobservingthepositionofashadowatmiddayorofaconstellation星座inthenightskyorevenofasteadywindusewasmadeofterrestrialmagnetism地磁学throughthemagneticcompassandinstrumentswereevolvedwhichenabledhorizontalanglestobecalculatedwithgreataccuracy. Theapplicationofastronomicalconceptsandtheextensionoftheknowledgeoftheworldthroughexplorationencouragedattemptstomaptheknownworld.Thenastronomersdiscoveredthattheearthisnotaperfectspherebutisflattenedslightlyatthepoleswhichintroducedfurtherrefinementsintothemappingoflargeareas.Meanwhilethedemandsbeingmadeofthemapmakerwereshiftingsignificantly.Thetravellerorthemerchantceasedtobethesoleuserofmaps.Thesoldierespeciallyaftertheintroductionofartilleryandtheproblemsofrangefieldoffireanddeadgroundwhichitraiseddemandedanaccuraterepresentationofthesurfacefeaturesinplaceoftheearlierconventionalorpictorialdelineation描绘andasolutioninanydegreesatisfactorywasnotreacheduntilthecontour等高线wasinvented. 1Whatproblemdidearlymapsexhibitwhenshowinglandmarks? A.Thesignsusedborelittlerelationtothelandmarks. B.Theselectionoflandmarkswasfaulty. C.Theyusedsymbolsthatwerenotstandardized. D.Theysometimesincludedunimportantfeatures. 2Inthesecondparagraphthewritersaysthatmadebetterqualitymap﹣makingeasier. A.agreaterunderstandingofclimaticfactor B.greateraccuracyindraughtsmanship绘图术 C.moreaccuracyinmeasurement D.moreintensivemapproduction 3Whatencouragedthesearchforamoreprecisemeansofmappingthephysicalgeographyofthelandscape? A.Discoveryinastronomy. B.Thegrowthofmathematicalscience. C.Theactivitiesofthegreatexplorers. D.Militaryconsiderations.
GrowinguponadairyfarmwasemotionalandeducationalandmademewhoIamtoday. Duringmychildhoodtherewerespecialcowswhotaughtmeimportantlifelessonsand1ofthembringasmiletomyfaceandateartomyeye. ItallstartedwithThunderthefirstcowIrecall2.WhenIwasabout4yearsoldIusedtoclimbupandspendhoursbrushingherandtalkingtoher3myparentsdidthemilking.Shewastrulymyfriend4Isharedallmysecretsandstories. ThenonedaymyparentstoldmeitwastimeforThundertogotothemarket.RealizingThunderwas5andIwasupset.Withtears6inmyeyesIgaveheronelasthugandwatchedherrolledoutofthedriveway.IlearnedfromThunderthatcowsarenotpets﹣whentheycannolongergivemilktheyare7tosupplybeef﹣anoblepurpose.Thundertaughtmeselflessnessandnobility. Mollywasthenextcowtoteachmeavaluablelesson.8hernaughtypersonalityItookMollytothecountyfairforshoweveryyear.Wealwaysdidwell9thespecialbondbetweenusthatthejudgescouldsee.WhenMollywas4yearsoldweevenbecamethechampion.WiththathugeshinyredcupIthoughtwewere10.IwassureMollywasthebestcowonthewholefairgrounds. Howeverintheopenshowacouplemonthslaterwewerehandedthemustard﹣coloredribbonoffourthplace.Myfirstinstinctwasto11thejudgewhoclearlydidn'tknowwhathewasdoing.Afterwatchingmepout噘嘴forawhileMotherchattedwithmeaboutsportsmanshipand12.Mollywasagreatcowbutshewasn'tthebestthatdayandthatwasOK.Mollytaughtmetobehumble. WhenIwas10myfathergavemea6﹣year﹣oldcowGingertoshow.Shewasabigbeautifulblackcowandshereallydidn'twantalittlekid13heraroundashowring.IworkedhardthatsummerleadingGingerupanddownourlongdrivewaysweatingheavilywiththe14.Butitwasall15thefirstyearGingerneededtobepushedaroundthewholering.Iwas16andfrustrated.ButIkeptworkingwithherand17thestubbornoldcowgaveinand18sheenjoyedtheshowring.Wewentonformanyyearsevenwinningshowmanshipseveraltimes.ThroughGingerIlearnedthathardworkpaysoffanddedicationproduces19. Sincethenmorecowshave20mylife.Ihopesomedaymyownsoncantellasimilarstoryfromalifespentwithanimalsonthefamilyfarm. 1A.judgments B.analyses C.losses D.memories 2A.bondingwith B.cateringto C.takingon D.adaptingto 3A.still B.while C.but D.so 4A.withwhom B.towhom C.withthem D.tothem 5A.leaving B.suffering C.adopted D.lost 6A.gettingover B.breakingdown C.wellingup D.occurringto 7A.bound B.meant C.promoted D.transferred 8A.Inspiteof B.Incaseof C.Inhonorof D.Intermsof 9A.butfor B.thanksto C.aswith D.apartfrom 10A.inconvincible B.unimaginable C.unbearable D.unconquerable 11A.contact B.dismiss C.blame D.fight 12A.diligence B.craftsmanship C.bravery D.modesty 13A.accompanying B.pushing C.dragging D.walking 14A.attention B.effort C.desire D.skill 15A.invain B.ontrac kC.inplace D.atrandom 16A.prejudiced B.embarrassed C.critical D.skeptical 17A.luckily B.literally C.eventually D.typically 18A.confirmed B.calculated C.estimated D.decided 19A.freedom B.efficiency C.discipline D.rewards 20A.created B.comforted C.impacted D.relieved
Todayrapiddevelopmentoftransportationandcommunicationthewholeworldseemstobesmaller. A.regardlessof B.inspiteof C.insteadof D.onaccountof
Mysonturnedtobookstoresandlibrariesseekinginformationaboutthebookrecommendedbyhisprofessorbutnone. A.wouldfind B.hadfound C.found D.hasbeenfinding
MyhusbandgavemeanecklaceasapresentonChristmaswhatIreallywantedwashisphysicalpresence. A.since B.unless C.when D.before
DespitetheuniversalacknowledgementoftheharmfulimpactofInternetaddictionpersuadinglargenumbersofcitizenstospendlesstimeonlineis. A.Achilles'heel B.aHerculeantask C.theTrojanwar D.aJekyllandHyde
Raisingtheincomesofthepoorislikelytobeineffectiveinawealthysocietyaccompaniedbyothermeasures. A.once B.when C.if D.unless
IoftenfelttroubledinmyteensandmygrandmacomfortmesayingLifeislikethatdear. A.would B.might C.should D.must
AustinPerineisnotatypicalsuperhero.Twothingssethimapart.Hisenemyisnot1tothepagesofacomicbook﹣Austin'senemieshungerand2areveryreal.Alsohe'sonlyfouryearsold. Ourhero'sstorystartedthispastFebruary3AustinandhisfatherTJPerinewerewatchingaprogramaboutsomehomelessbabypandas.Austindidn'tknowwhathomelessnessmeantbuthewas4andwantedtoknowmore.TJsays. Seeingthisasa5momentTJtookAustintotheFirehouseMinistriesalocalshelterthat6homelessmen.DadtheylooksadAustinsaid.Canwetakethemsomefoodandmakethem7?ThatdayAustinusedhis8tobuyeachmanaBurgerKingsandwichandhandedthefoodouthimself.Seeingwhattheir9meanttothemenattheministryAustinandTJreturnedthenextweek.Austinagain10intohispiggybanktobuysandwicheswhichhehandedoutalongwithhisnewcatchphrase口头禅Don'tforgettoshowlove! AfterhereturnedeveryweekforfiveweekswordofAustin'sactsof11spread.BurgerKingjumpedaboardagreeingto12﹩1000amonthforanentireyeartowardthe13.SoonchurchesandsheltersacrossthecountrybeganinvitingAustintodistributefoodinotherpoverty﹣strickenareas.WhereasbeforeAustinandTJcouldfeed25to50peopleatatimenow14corporateandcommunitysupporttheycanfeed800to2000peopleatonce. ButAustinisn'tjustfillingbellies.He'simprovingthe15ofthosehemeets.OnthatfirsttriptoFirehouseMinistriesTJandAustintalkedtoamannamedRaymont.TherespectAustinshowedto41﹣year﹣oldRaymont16themanandhesharedwithTJjusthowgratefulhewastobetreatedso17byafour﹣year﹣oldstranger.TJhelpedRaymontcollectallthedocumentsheneededtogetadriver'slicensewhichhelpedRaymontgetajob.Andwithmoneyinthebankhewasableto18hisownapartment.Allthatwasmadepossiblebecausealittleboytookthetimeto19. AndnowAustincontinuestogiveoutfoodsmilesandhis20messageoflove.ItmakesmefeellikeI'msavingtheday. 1A.attached B.restricted C.dedicated D.applied 2A.homelessness B.disability C.prejudice D.disasters 3A.where B.when C.until D.that 4A.disappointed B.hopeless C.annoyed D.depressed 5A.admirable B.worthwhile C.teachable D.sensitive 6A.settlesfor B.makesfor C.providesfor D.allowsfor 7A.smile B.consume C.surprise D.appreciate 8A.revenues B.allowance C.commission D.admission 9A.presence B.schedule C.discovery D.promise 10A.looked B.burst C.knocked D.dipped 11A.friendliness B.neighborliness C.happiness D.kindness 12A.donate B.invest C.arrange D.allocate 13A.expectation B.project C.cause D.struggle 14A.accordingto B.thanksto C.apartfrom D.farfrom 15A.images B.memories C.knowledge D.lives 16A.cured B.justified C.touched D.defended 17A.peacefully B.officially C.flexibly D.considerately 18A.rent B.repair C.decorate D.occupy 19A.attempt B.care C.dream D.shelter 20A.challenging B.ambitious C.inspirational D.natural
Ifanentirecountrygetsricheratthesametimeindividualswouldn'tfeelwealthiersincetheirrelativepositionsinsocietyhaven'tchanged. A.necessarily B.initially C.typically D.sustainably
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