《科技英语》期末考试试题.docx

《科技英语》期末考试试题.docx

《《科技英语》期末考试试题.docx》由会员分享，可在线阅读，更多相关《《科技英语》期末考试试题.docx（12页珍藏版）》请在冰豆网上搜索。

《科技英语》期末考试试题

西安电子科技大学网络教育学院

模拟试题

（一）

《科技英语》期末考试试题

（考试形式120分钟）

题号

一

二

三

四

五

总分

题分

得分

I.PutthefollowingsentencesintoChinese:

（4pointsforeach）

1.Thecurrentreachesthemaximumvaluewhenw=w0,similartothesituationinaseriesresonantcircuit.

2.Withtheswitchonposition1,theoutputimpedancewillbemaximum.

3.Thegreaterthenuclearmass,thelessoftheneutron'senergyistransferredtothenucleus.

4.XVIisusedtoexpressthenumberof16.Toexpressanumberathousandtimeslarger,theRomansputalineabovethatnumber.

5.Inthiscasethesignalwaveformcanbetransmittedundistorted.

6.Acapacitorisadeviceconsistingoftwoconductorsseparatedbyanon-conductor.

7.Expressedinaformula,therelationshipbetweenvoltage,current,andresistancecanbewrittenasV=IR.

8.Thisaccountfortheobservationthattheresistivityofametalincreaseswithtemperature.

9.WhiletherehasbeenanenormousamountofliteratureaboutATMoverthepasttwoyears,manynetworkingbookshavenotfocusedonATMitself.

10.TheadvantageofTDMAoverSCPCisthatmoregroundstationscanshareasinglesatellitetransponder.

11.In1895,aGermanphysicistdiscoveredwhatareknownasXrays.

12.Thematerialofwhichthisconductorismadeiscopper.

13.Itiswhenanobjectisheatedthattheaveragespeedofmoleculesisincreased.

14.Onlywhenweexertonanobjectanupwardforcesufficientinmagnitudecanweliftit.

15.Ineveryatominitsnormalstate,thenumberofprotonsequalsthenumberofelectrons,somethingthatisdirectlyrelatedtotheelectricalpropertiesoftheprotonandtheelectron.

II.TranslatethefollowingintoChinese:

（40pointsinall）

Acomputerisamachineand,likeallmachines,mustbedirectedandcontrolledtoperformatask.Untilaprogramispreparedandstoredinthecomputer'smemory,thecomputer"knows"absolutelynothing,notevenhowtoacceptdata.Nomatterhowgoodacomputermaybe,itmustbe"told"whattodo.Theutilityofacomputercannotbefullyrealized,therefore,untilthecapabilities（andthelimitations）ofthecomputerarerecognized:

1.Repetitiveoperation:

acomputercanperformsimilaroperationsthousandsoftimes,withoutbecomingbored,tired,orcareless.

2.Speed:

acomputerprocessesinformationatextremelyrapidrates.Forexample,moderncomputerscansolvecertainclassesofproblemsmillionsoftimesfasterthanaskilledmathematician.3.Flexibility:

general-purposecomputersmaybeprogrammedtosolvemanytypesofproblems.

4.Accuracy:

computersmaybeprogrammedtocalculateanswerswithadesiredlevelofaccuracyasspecifiedbytheprogrammer.

5.Intuition:

acomputerhasnointuition.Amanmaysuddenlyfindtheanswerstoaproblemwithoutworkingoutthedetails,butacomputercanonlyproceedasordered.

Inexamininganycomputersystem,therearethreelevelsatwhichitisusefultoconsiderthecandidatemachine:

thearchitecturallevel,theorganizationallevelandtheimplementationlevel.Thearchitectureofacomputerisoftendefinedasthesetofresourcesseenbytheprogrammer.Attheorganizationallevel,oneviewsofthecomputersystembeneaththevisiblearchitecturallevel.Attheimplementationlevel,weviewthecomputersystemasacollectionofwires,cables,semiconductorchipsanddiscretecomponents.

西安电子科技大学网络教育学院

模拟试题

（二）

《科技英语》期末考试试题

（考试形式120分钟）

题号

一

二

三

四

五

总分

题分

得分

I.PutthefollowingsentencesintoChinese:

（4pointsforeach）

• Thevarietiesofnonferrous（有色金属）metalarenearlyfourtimeswhattheywere.

2.Faradaywasunabletocalculatethevelocityofpropagationofelectromagneticwaves,ataskwhichrequiredthemathematicalprecisionofMaxwell,whichFaradayentirelylacked.

3.Thewavetheorycangivenoreasonwhythereshouldbeathresholdfrequencybelowwhichnophotoelectronsareobserved,nomatterhowstrongthelightbeam,somethingthatfollowsnaturallyformthequantumtheory.

4.Thefirststepinanuclearreactionbetweentwocollidingnuclearparticlesistheirjoiningtogethertoformacompoundnucleus.

5.Afurthercomplicationisthetendencyofthepilot'sbloodtoleavehisheadbecauseofinertia,leavinghimimpairedvisionandperhapsunconscious.

6.Discussionofthismaterialisdeferreduntilthefinalchapterbecauseonlythenisthefeedback,circuit,andapplicationbackgroundnecessarytofullyappreciatethesubtletiesofcompensatingmodemoperationalamplifiersavailable.

7.Ofwiderapplicationisthefactthatmatterusuallyexpandswhenitstemperatureisincreasedandcontractswhenitstemperatureisdecreased.

8.Thegreaterthenuclearmass,thelessoftheneutron'senergyistransferredtothenucleus.

9.Theturningoftheearthonitsownaxisiswhatmakesthechangefromdaytonight.

10.Itistheexistenceofandtheabilitytocontrolpreciselythesetwoindependentcharge-transportmechanismsthatmakepossiblealljunctionsemiconductordevices.

11.Anewtechnologyintroducedinthe1960s,lasercanpiercethehardestsubstancesuchasdiamond.

12.Thisissosensitiveanammeterthatitcanmeasuretheslightchangeincurrent.

• Light,durable,simpleandinexpensive,suchdevicesarewarmlyreceivedbyusers.

• Thequestionnowariseswhetherthisseriesconverges.

• Feedbackplaysanimportantroleinalmostallelectroniccircuits.Itsstudyisintroducedheretoprovideaviewoftheamplifierasagainelement.

II.TranslatethefollowingintoChinese:

（40pointsinall）

Moderncivilizationwouldbeimpossiblewithouttheuseoflargequantitiesofenergy.Inthelastfortyyears,energyusageintheUnitedStateshasincreasedmorethan400%whiletheaccompanyingpopulationincreasehasbeenonly72%.ThusthepercapitauseofenergyintheUnitedStateshasincreasedataveryfastrate.

Untilrecently,theworld'senergydemandsweremetalmostentirelythroughtheuseoffossilfuels:

wood,coal,petroleum,andnaturalgas.Sincethesearelimitedinquantity,however,othersourcesmustbefound.Nuclearandsolarenergyaretwoalternatesources,andneitherofthemislimited.Ithasbeencalculated,forinstance,thattheenergydemandsofthewholeworldcouldbemetbyutilizingthesolarenergyfallingona125-milesquareplotofgroundneartheequator.Atthepresenttime,however,nuclearandsolarenergymakeuponlyasmallfractionofthetotalenergyused.Asourknowledgeandmeansofconvertingtheseampleenergysuppliesintousableformsincrease,weshallbebetterabletokeeppacewithrisingenergyneeds.However,itwilltakemorethanjusttheefforts'ofsciencetosolvetheenergyproblem.Fuelconservationbyallsegmentsofthepopulationmustaccompanynewscientificadvances.

Brieflystated,scienceisthesearchforrelationshipsthatexplainandpredictthebehavioroftheuniverse.Technologyistheapplicationoftheserelationshipstoourneedsandgoals.Findingnewenergysourcesfallsintotherealmofscience.Developingandutilizingthesediscoveriesaremattersoftechnology.

Thecomplementaryworkofscientistsandtechnologistsisalsoreferredto,respectively,asresearchanddevelopment.Bothgovernmentandprivateindustryallocatelargesumsofmoneytosupporttheresearchanddevelopmentactivitiesofscientistsandengineers.Withoutsuchsupport,therewouldbelittleimprovementintheprocesses,products,andservicesthatarederivedfromtheseactivities.

西安电子科技大学网络教育学院

模拟试题（三）

《科技英语》期末考试试题

（考试形式120分钟）

题号

一

二

三

四

五

总分

题分

得分

I.PutthefollowingsentencesintoChinese:

（4pointsforeach）

1.Itisimportantforthereadertolearnandunderstandthebasicconceptsandoperationspresentedhere,orthedevelopmentandtheapplicationsoflatertopicswillbedifficulttocomprehend.

2.Thecapacitanceofacapacitordependsonthesizeoftheplatesandtheirdistanceapart.

3.Largeorsmall,allcircuitswillcontainthesamekindsofcomponents.

4.Abaseballthatlandsinanopensooncomestorestbecauseofitsinteractionwiththeground.

5.Theeffectoftemperatureontheresistanceofasemiconductormustbetakenintoaccount.

6.Theselayersarenot“stretched”asarubbersheetwouldbe.

7.Fullusemustbemadeofthecomputersavailable.

8.Gravityisthetendencyofallobjectstoattract,andbeattractedby,eachother.

9.Havingstudiedthischapter,thereaderwillunderstandtheprinciplesofaradioreceiver.

10.Eachplanetrevolvesaroundthesuninanellipticalorbit,withthesunatonefocusoftheellipse.

11.Thelineofactionisalineofinfinitelength,ofwhichtheforcevectorisasegment.

12.Aspointedoutinthelastchapter,theemfofabatteryisgeneratedbythechemicalreactionwithinit.

13.Itiswhenanobjectisheatedthattheaveragespeedofmoleculesisincreased.

14.Wecallinsulatorsthesesubstanceswhichpreventthepassageofelectricity.

15.Whatliesbehindthismeetingisanincreasingawarenessaroundtheworldoftheurgencyofreducingglobalwarming.

II.TranslatethefollowingintoChinese:

（40pointsinall）

Acomputer,likeanyothermachine,isusedbecauseitdoescertaintasksbetterandmoreefficientlythanhumans.Specifically,itcanreceivemoreinformationandprocessitfasterthanahuman.Often,thisspeedmeansthatweeksormonthsofpencil-and-paperworkcanbereplacedbyamethodrequiringonlyminutesofcomputertime.Therefore,computersareusedwhenthetimesavedbyusingacomputeroffsetsitscost.Furt