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属呼吸链中的酶是()
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属呼吸链中的酶是
6-磷酸葡萄糖脱氢酶
苹果酸脱氢酶
丙酮酸脱氢酶
NADH脱氢酶
葡萄糖-6-磷酸酶
关于呼吸链的叙述下列何者正确
存在于线粒体
参与呼吸链中氧化还原酶属不需氧脱氢酶
NAD+ 是递氢体
NAD + 是递电子体
细胞色素是递电子体
属呼吸链中的酶是
6-磷酸葡萄糖脱氢酶
苹果酸脱氢酶
心肌酶
NADH脱氢酶
葡萄糖-6-磷酸酶
属呼吸链中的酶是
6-磷酸葡萄糖脱氢酶
苹果酸脱氢酶
丙酮酸脱氢酶
NADH脱氢酶
葡萄糖-6-磷酸酶
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InthefirstyearorsoofWebbusinessmostoftheactionhasrevolvedaroundeffortstotaptheconsumermarket.MorerecentlyastheWebprovedtobemorethanfashioncompanieshavestartedtobuyandsellproductsandserviceswithoneanother.Suchbusiness-to-businesssalesmakesensebecausebusinesspeopletypicallyknowwhatproductthey’’relookingfor. NonethelessmanycompaniesstillhesitatetousetheWebbecauseofdoubtsaboutitsreliability.BusinessesneedtofeeltheycantrustthepathwaybetweenthemandthesuppliersayssenioranalystBlaneErwinofForresterResearch.Somecompaniesarelimitingtheriskbyconductingonlinetransactionsonlywithestablishedbusinesspartnerswhoaregivenaccesstothecompany’’sprivateinternet. AnothermajorshiftinthemodelforInternetcommerceconcernsthetechnologyavailableformarketing.UntilrecentlyInternetmarketingactivitieshavefocusedonstrategiestopullcustomersintosites.Inthepastyearhoweversoftwarecompanieshavedevelopedtoolsthatallowcompaniestopushinformationdirectlyouttoconsumerstransmittingmarketingmessagesdirectlytotargetedcustomers.MostnotablythePointcastNetworkusesascreensavertodeliveracontinuallyupdatedstreamofnewsandadvertisementstosubscribers’’computermonitors.Subscriberscancustomizetheinformationtheywanttoreceiveandproceeddirectlytoacompany’’sWebsite.CompaniessuchasVirtualVineyardsarealreadystartingtousesimilartechnologiestopushmessagestocustomersaboutspecialsalesproductofferingsorotherevents.ButpushtechnologyhasearnedthecontemptofmanyWebusers.Onlineculturethinkshighlyofthenotionthattheinformationflowingontothescreencomestherebyspecificrequest.OncecommercialpromotionbeginstofillthescreenuninvitedthedistinctionbetweentheWebandtelevisionfades.That’’saprospectthathorrifiesNetpurists. ButitishardlyinevitablethatcompaniesontheWebwillneedtoresorttopushstrategiestomakemoney.TheexamplesofVirtualVineyardsAmazon.comandotherpioneersshowthataWebsitesellingtherightkindofproductswiththerightmixofinteractivityhospitalityandsecuritywillattractonlinecustomers.Andthecostofcomputingpowercontinuestofreefallwhichisagoodsignforanyenterprisesettingupshopinsilicon.Peoplelookingback5or10yearsfromnowmaywellwonderwhysofewcompaniestooktheonlineplunge. Speakingoftheonlinetechnologyavailableformarketingtheauthorimpliesthat____________.
Thedifferencesinrelativegrowthofvariousareasofscientificresearchhaveseveralcauses.71.Someofthesecausesarecompletelyreasonableresultsofsocialneeds.Othersarereasonableconsequencesofparticularadvancesinsciencebeingtosomeextentself-accelerating.Somehoweverarelessreasonableprocessesofdifferentgrowthinwhichpreconceptionsoftheformscientifictheoryoughttotakebypersonsinauthorityacttoalterthegrowthpatternofdifferentareas.Thisisanewproblemprobablynotyetunavoidable;butitisafrighteningtrend.72.ThistrendbeganduringtheSecondWorldWarwhenseveralgovernmentscametotheconclusionthatthespecificdemandsthatagovernmentwantstomakeofitsscientificestablishmentcannotgenerallybeforeseenindetail.Itcanbepredictedhoweverthatfromtimetotimequestionswillarisewhichwillrequirespecificscientificanswers.Itisthereforegenerallyvaluabletotreatthescientificestablishmentasaresourceormachinetobekeptinfunctionalorder.73.Thisseemsmostlyeffectivelydonebysupportingacertainamountofresearchnotrelatedtoimmediategoalsbutofpossibleconsequenceinthefuture. Thiskindofsupportlikeallgovernmentsupportrequiresdecisionsabouttheappropriaterecipientsoffunds.Decisionsbasedonutilityasopposedtolackofutilityarestraightforward.Butadecisionamongprojectsnoneofwhichhasimmediateutilityismoredifficult.Thegoalofthesupportingagenciesisthepraisableoneofsupportinggoodasopposedtobadsciencebutavaliddeterminationisdifficulttomake.Generallytheideaofgoodsciencetendstobecomeconfusedwiththecapacityofthefieldinquestiontogenerateaneleganttheory.74.Howevertheworldissomadethatelegantsystemsareinprincipleunabletodealwithsomeoftheworld’’smorefascinatinganddelightfulaspects.75.Newformsofthoughtaswellasnewsubjectsforthoughtmustariseinthefutureastheyhaveinthepastgivingrisetonewstandardsofelegance.
以下哪一项描述不符合硅肺的病变特点
关于左心室舒张功能不全的诊断下列哪一项最有意义
Fewcreationsofbigtechnologycapturetheimaginationlikegiantdams.Perhapsitishumankind’’slongsufferingatthemercyoffloodanddroughtthatmakestheideaofforcingthewaterstodoourbiddingsofascinatingButtobefascinatedisalsosometimestobeblind.Severalgiantdamprojectsthreatentodomoreharmthangood. Thelessonfromdamsisthatbigisnotalwaysbeautiful.Itdoesn’’thelpthatbuildingabigpowerfuldamhasbecomeasymbolofachievementfornationsandpeoplestrivingtoassertthemselves.Egypt’’sleadershipintheArabworldwascementedbytheAswanHighDam.Turkey’’sbidforFirstWorldstatusincludesthegiantAtaturkDam. Butbigdamstendnottoworkasintended.TheAswanDamforexamplestoppedtheNilefloodingbutdeprivedEgyptofthefertilesiltthatfloodsleft―allinreturnforagiantreservoirofdiseasewhichisnowsofullofsiltthatitbarelygenerateselectricity. Andyetthemythofcontrollingthewaterspersists.ThisweekintheheartofcivilizedEuropeSlovaksandHungariansstoppedjustshortofsendinginthetroopsintheircontentionoveradamontheDanube.Thehugecomplexwillprobablyhavealltheusualproblemsofbigdams.ButSlovakiaisbiddingforindependencefromtheCzechsandnowneedsadamtoproveitself. MeanwhileinIndiatheWorldBankhasgiventhego-aheadtotheevenmorewrong-headedNarmadaDam.Andthebankhasdonethiseventhoughitsadvisorssaythedamwillcausehardshipforthepowerlessandenvironmentaldestruction.Thebenefitsareforthepowerfulbuttheyarefarfromguaranteed. Properscientificstudyoftheimpactsofdamsandofthecostsandbenefitsofcontrollingwatercanhelptoresolvetheseconflicts.Hydroelectricpowerandfloodcontrolandirrigationarepossiblewithoutbuildingmonsterdams.Butwhenyouaredealingwithmythsitishardtobeeitherproperorscientific.ItistimethattheworldlearnedthelessonsofAswan.Youdon’’tneedadamtobesaved. Whattheauthortriestosuggestmaybestbeinterpretedas____________.
在高原高空环境下只要吸入气PO2大于60mmHgHb氧饱和度仍可达
维持胸膜腔内负压的必要条件是
Fewcreationsofbigtechnologycapturetheimaginationlikegiantdams.Perhapsitishumankind’’slongsufferingatthemercyoffloodanddroughtthatmakestheideaofforcingthewaterstodoourbiddingsofascinatingButtobefascinatedisalsosometimestobeblind.Severalgiantdamprojectsthreatentodomoreharmthangood. Thelessonfromdamsisthatbigisnotalwaysbeautiful.Itdoesn’’thelpthatbuildingabigpowerfuldamhasbecomeasymbolofachievementfornationsandpeoplestrivingtoassertthemselves.Egypt’’sleadershipintheArabworldwascementedbytheAswanHighDam.Turkey’’sbidforFirstWorldstatusincludesthegiantAtaturkDam. Butbigdamstendnottoworkasintended.TheAswanDamforexamplestoppedtheNilefloodingbutdeprivedEgyptofthefertilesiltthatfloodsleft―allinreturnforagiantreservoirofdiseasewhichisnowsofullofsiltthatitbarelygenerateselectricity. Andyetthemythofcontrollingthewaterspersists.ThisweekintheheartofcivilizedEuropeSlovaksandHungariansstoppedjustshortofsendinginthetroopsintheircontentionoveradamontheDanube.Thehugecomplexwillprobablyhavealltheusualproblemsofbigdams.ButSlovakiaisbiddingforindependencefromtheCzechsandnowneedsadamtoproveitself. MeanwhileinIndiatheWorldBankhasgiventhego-aheadtotheevenmorewrong-headedNarmadaDam.Andthebankhasdonethiseventhoughitsadvisorssaythedamwillcausehardshipforthepowerlessandenvironmentaldestruction.Thebenefitsareforthepowerfulbuttheyarefarfromguaranteed. Properscientificstudyoftheimpactsofdamsandofthecostsandbenefitsofcontrollingwatercanhelptoresolvetheseconflicts.Hydroelectricpowerandfloodcontrolandirrigationarepossiblewithoutbuildingmonsterdams.Butwhenyouaredealingwithmythsitishardtobeeitherproperorscientific.ItistimethattheworldlearnedthelessonsofAswan.Youdon’’tneedadamtobesaved. Inparagraph5thepowerlessprobablyrefersto____________.
下列哪个酶直接参与底物水平磷酸化
InthefirstyearorsoofWebbusinessmostoftheactionhasrevolvedaroundeffortstotaptheconsumermarket.MorerecentlyastheWebprovedtobemorethanfashioncompanieshavestartedtobuyandsellproductsandserviceswithoneanother.Suchbusiness-to-businesssalesmakesensebecausebusinesspeopletypicallyknowwhatproductthey’’relookingfor. NonethelessmanycompaniesstillhesitatetousetheWebbecauseofdoubtsaboutitsreliability.BusinessesneedtofeeltheycantrustthepathwaybetweenthemandthesuppliersayssenioranalystBlaneErwinofForresterResearch.Somecompaniesarelimitingtheriskbyconductingonlinetransactionsonlywithestablishedbusinesspartnerswhoaregivenaccesstothecompany’’sprivateinternet. AnothermajorshiftinthemodelforInternetcommerceconcernsthetechnologyavailableformarketing.UntilrecentlyInternetmarketingactivitieshavefocusedonstrategiestopullcustomersintosites.Inthepastyearhoweversoftwarecompanieshavedevelopedtoolsthatallowcompaniestopushinformationdirectlyouttoconsumerstransmittingmarketingmessagesdirectlytotargetedcustomers.MostnotablythePointcastNetworkusesascreensavertodeliveracontinuallyupdatedstreamofnewsandadvertisementstosubscribers’’computermonitors.Subscriberscancustomizetheinformationtheywanttoreceiveandproceeddirectlytoacompany’’sWebsite.CompaniessuchasVirtualVineyardsarealreadystartingtousesimilartechnologiestopushmessagestocustomersaboutspecialsalesproductofferingsorotherevents.ButpushtechnologyhasearnedthecontemptofmanyWebusers.Onlineculturethinkshighlyofthenotionthattheinformationflowingontothescreencomestherebyspecificrequest.OncecommercialpromotionbeginstofillthescreenuninvitedthedistinctionbetweentheWebandtelevisionfades.That’’saprospectthathorrifiesNetpurists. ButitishardlyinevitablethatcompaniesontheWebwillneedtoresorttopushstrategiestomakemoney.TheexamplesofVirtualVineyardsAmazon.comandotherpioneersshowthataWebsitesellingtherightkindofproductswiththerightmixofinteractivityhospitalityandsecuritywillattractonlinecustomers.Andthecostofcomputingpowercontinuestofreefallwhichisagoodsignforanyenterprisesettingupshopinsilicon.Peoplelookingback5or10yearsfromnowmaywellwonderwhysofewcompaniestooktheonlineplunge. Welearnfromthelastparagraphthat____________.
RNA和DNA彻底水解后的产物是
急性血源性骨髓炎的发病部位最常见于
诊断支气管哮喘的主要依据是
Therewillbeasteadytrendtowardvegetarianism.Agivenquantityofgroundcanprovideplantfoodformanoritcanprovideplantfoodforanimalswhicharelaterkilledformeat. Inconvertingthetissuesoffoodintothetissuesofthefeederupto90percentisusedforreasonsotherthantissuemaintenanceandgrowth.Thismeansthatonehundredpoundsofplantfoodwillsupporttenpoundsofhumantissue―whileonehundredpoundsofplantfoodwillsupporttenpoundsofanimaltissuewhichwillthensupportonepoundofhumantissue.Inotherwordslanddevotedtoplantfoodwillsupporttentimesasmanyhumanbeingsaslanddevotedtoanimalfood. Itisthisfarmorethanfoodpreferencesorreligiousdirectionsthatforcesovercrowdedpopulationsintovegetarianism.AnditwillbethedirectioninwhichtheUnitedStatesof2001willbemoving―notbypresidentialorderbutthroughtheforceofasteadyriseinmeatpricesascomparedwithotherkindsoffood. Thisinturnwillcomeaboutbecauseourherdswilldecreaseasthefooddemandcausesmoreandmoremeadowtobeturnedtofarmlandandaslandproducingcornandotheranimalfoodisconvertedtoprovidingfooddirectlyforman. Anotherpointisthatitisnotonlyenergythatisinshortsupply.Ashortageofoilmeansashortageofplastics;ashortageofelectricitymeansashortageofaluminium.Wearealsoexperiencingashortageofpaperandmostotherrawmaterials. Thismeansthatforonethingourgenerosityinwrappingbaggingandpackagingwillhavetorecede.Therewillhavetobeatleastapartialreturninsupermarketstotheolddayswheregoodsweresuppliedinbulkandgivenoutinbagstoorder.Itmayevenbecomenecessarytoreturnbagsasweoncereturnedbottlesorpayfornewones. Adeclineinper-capitaenergyusewillmakeitnecessarytoresorttohumanmuscleagainsothatthedeliverymanwillmakeacomebackhispriceaddedtothatofthefoodofcourse.Sinceenergyshortageswillcauseunemploymentinmanysectorsoftheeconomytherewillbeidlehandstodothemanualworkthatwillbecomenecessary. Fromanenergy-savingstandpointitwouldmakefarmoresensetoorderbyphoneandhaveasingletruckdeliverfoodtomanyhomesthanforamemberofeachhometodriveanautomobileround-triptopickupaone-familyfoodsupply. Tobesureitwillnotallberetrogression.EvenassumingthatEarthisinadesperatebattleofsurvivalthroughacrisisofstillrisingpopulationanddwindlingenergyreservesthereshouldstillcontinuetobetechnologicaladvancesinthosedirectionsthatdon’’tdependonwastefulbulkuseofenergy.Therewillbecontinuingadvancesinthedirectionofsophisticationinotherwords. ThephrasewillhavetorecedeinPar.6mostprobablymeans
下列哪项与慢性纤维空洞型肺结核病变不符
心率过快时心输出量减少的原因是
下列哪一种并发症在溃疡性结肠炎最少见
主动脉血流能在心动周期中保持相对稳定其主要原因是主动脉的
大肠癌最好发的部位是
Thedifferencesinrelativegrowthofvariousareasofscientificresearchhaveseveralcauses.71.Someofthesecausesarecompletelyreasonableresultsofsocialneeds.Othersarereasonableconsequencesofparticularadvancesinsciencebeingtosomeextentself-accelerating.Somehoweverarelessreasonableprocessesofdifferentgrowthinwhichpreconceptionsoftheformscientifictheoryoughttotakebypersonsinauthorityacttoalterthegrowthpatternofdifferentareas.Thisisanewproblemprobablynotyetunavoidable;butitisafrighteningtrend.72.ThistrendbeganduringtheSecondWorldWarwhenseveralgovernmentscametotheconclusionthatthespecificdemandsthatagovernmentwantstomakeofitsscientificestablishmentcannotgenerallybeforeseenindetail.Itcanbepredictedhoweverthatfromtimetotimequestionswillarisewhichwillrequirespecificscientificanswers.Itisthereforegenerallyvaluabletotreatthescientificestablishmentasaresourceormachinetobekeptinfunctionalorder.73.Thisseemsmostlyeffectivelydonebysupportingacertainamountofresearchnotrelatedtoimmediategoalsbutofpossibleconsequenceinthefuture. Thiskindofsupportlikeallgovernmentsupportrequiresdecisionsabouttheappropriaterecipientsoffunds.Decisionsbasedonutilityasopposedtolackofutilityarestraightforward.Butadecisionamongprojectsnoneofwhichhasimmediateutilityismoredifficult.Thegoalofthesupportingagenciesisthepraisableoneofsupportinggoodasopposedtobadsciencebutavaliddeterminationisdifficulttomake.Generallytheideaofgoodsciencetendstobecomeconfusedwiththecapacityofthefieldinquestiontogenerateaneleganttheory.74.Howevertheworldissomadethatelegantsystemsareinprincipleunabletodealwithsomeoftheworld’’smorefascinatinganddelightfulaspects.75.Newformsofthoughtaswellasnewsubjectsforthoughtmustariseinthefutureastheyhaveinthepastgivingrisetonewstandardsofelegance.
女性26岁头晕一年伴月经增多间断出现吞咽困难半年舌乳头萎缩Hb50g/ LPLT130×109/LWBC5.0×109/L白细胞分类淋巴细胞30%中性70%首先考虑的诊断是
男45岁肝病10余年近半年肝区不适在医院行影像学检查发现肝脏左外叶有2.8cm占位病变疑为肝癌为明确占位病变性质下列哪项检查最佳
Thedifferencesinrelativegrowthofvariousareasofscientificresearchhaveseveralcauses.71.Someofthesecausesarecompletelyreasonableresultsofsocialneeds.Othersarereasonableconsequencesofparticularadvancesinsciencebeingtosomeextentself-accelerating.Somehoweverarelessreasonableprocessesofdifferentgrowthinwhichpreconceptionsoftheformscientifictheoryoughttotakebypersonsinauthorityacttoalterthegrowthpatternofdifferentareas.Thisisanewproblemprobablynotyetunavoidable;butitisafrighteningtrend.72.ThistrendbeganduringtheSecondWorldWarwhenseveralgovernmentscametotheconclusionthatthespecificdemandsthatagovernmentwantstomakeofitsscientificestablishmentcannotgenerallybeforeseenindetail.Itcanbepredictedhoweverthatfromtimetotimequestionswillarisewhichwillrequirespecificscientificanswers.Itisthereforegenerallyvaluabletotreatthescientificestablishmentasaresourceormachinetobekeptinfunctionalorder.73.Thisseemsmostlyeffectivelydonebysupportingacertainamountofresearchnotrelatedtoimmediategoalsbutofpossibleconsequenceinthefuture. Thiskindofsupportlikeallgovernmentsupportrequiresdecisionsabouttheappropriaterecipientsoffunds.Decisionsbasedonutilityasopposedtolackofutilityarestraightforward.Butadecisionamongprojectsnoneofwhichhasimmediateutilityismoredifficult.Thegoalofthesupportingagenciesisthepraisableoneofsupportinggoodasopposedtobadsciencebutavaliddeterminationisdifficulttomake.Generallytheideaofgoodsciencetendstobecomeconfusedwiththecapacityofthefieldinquestiontogenerateaneleganttheory.74.Howevertheworldissomadethatelegantsystemsareinprincipleunabletodealwithsomeoftheworld’’smorefascinatinganddelightfulaspects.75.Newformsofthoughtaswellasnewsubjectsforthoughtmustariseinthefutureastheyhaveinthepastgivingrisetonewstandardsofelegance. Thedifferencesinrelativegrowthofvariousareasofscientificresearchhaveseveralcauses.71.Someofthesecausesarecompletelyreasonableresultsofsocialneeds.Othersarereasonableconsequencesofparticularadvancesinsciencebeingtosomeextentself-accelerating.Somehoweverarelessreasonableprocessesofdifferentgrowthinwhichpreconceptionsoftheformscientifictheoryoughttotakebypersonsinauthorityacttoalterthegrowthpatternofdifferentareas.Thisisanewproblemprobablynotyetunavoidable;butitisafrighteningtrend.72.ThistrendbeganduringtheSecondWorldWarwhenseveralgovernmentscametotheconclusionthatthespecificdemandsthatagovernmentwantstomakeofitsscientificestablishmentcannotgenerallybeforeseenindetail.Itcanbepredictedhoweverthatfromtimetotimequestionswillarisewhichwillrequirespecificscientificanswers.Itisthereforegenerallyvaluabletotreatthescientificestablishmentasaresourceormachinetobekeptinfunctionalorder.73.Thisseemsmostlyeffectivelydonebysupportingacertainamountofresearchnotrelatedtoimmediategoalsbutofpossibleconsequenceinthefuture. Thiskindofsupportlikeallgovernmentsupportrequiresdecisionsabouttheappropriaterecipientsoffunds.Decisionsbasedonutilityasopposedtolackofutilityarestraightforward.Butadecisionamongprojectsnoneofwhichhasimmediateutilityismoredifficult.Thegoalofthesupportingagenciesisthepraisableoneofsupportinggoodasopposedtobadsciencebutavaliddeterminationisdifficulttomake.Generallytheideaofgoodsciencetendstobecomeconfusedwiththecapacityofthefieldinquestiontogenerateaneleganttheory.74.Howevertheworldissomadethatelegantsystemsareinprincipleunabletodealwithsomeoftheworld’’smorefascinatinganddelightfulaspects.75.Newformsofthoughtaswellasnewsubjectsforthoughtmustariseinthefutureastheyhaveinthepastgivingrisetonewstandardsofelegance.
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