电气专业英语试卷-复习B卷

第1页共4页电气专业英语试卷复习卷2一.中英文单词互译.(1’*25=25’)1．screw2．Magneticfield3．resistor4．multimeter5．semiconductor6．circuit7．acceleration8．gear9．spindle10．switch11.传感器12．气动13．电动机14．速度15．电感16．绝缘体17．接触器18．弹簧19．常开触点20．电压21．导体22．电容23．焊接24．并联电路25．串联电路二．根据英文词组，写出中文意义（2’*10=20’）ontheotherhandtakeadvantageofpositivecharge第2页共4页gravityfieldfreeelectroncurrentflowAxialforceElectromotiveforceMechanicaldrawingThreedimentional三．英文翻译成中文(30*1=30’)1．Beforemeasuringaresistance,itisimportanttocheckthezeroadjustment..Theprocedureisasfollow:(1)Settherangeselectorswitchonthedesiredrange.(2)Connectthetestleadstogether.Theindicatingneedleshouldpointtozero.(3)Iftheneedleisnotalignedwithzeroline,turnthezeroadjustmentuntiltheneedleandthezerolinearealigned.Note:Donotleavethetestleadsconnectedtogether,becauseunderzeroresistancethebatterieswilldeterioraterapidly.(4)CAUTION:Besurethecircuitisdeenergized.(5)Connectthetestleadsacross(inparallelwith)thecomponentorcircuittobemeasured.四、根据英文缩写，写出英文完整形式及中文意思（2’*5=10’）第3页共4页五．根据下列方框中所给的词填空（1’*5=5’）gearboxcoolantlubricationchipmaintenancetoolexternalfilterscracking1.Dailymaintenanceincludescheckingthe______viewsandcheckingtheinsideofthecontrolunits.Checkingtheexternalviewsincludes:(1)Fill____everyeight-hourshift(2)Check___________tanklevelofslideways.(3)Clean________fromslidewaycoversandbottompans.(4)Cleanchipsfrom________changers.六．根据下列短文回答问题,回答请使用英文。（2’*5=10’）Electricpotentialiswhatdrivescurrent.Youmayknowelectricpotentialbyanothertermthatwewilluse...voltage.Thisnamecomesfromtheunitofpotential,whichisthevolt(denotedV).WhenyoubuyanAAbattery,youarebuyingadevicethatprovidesapotentialof1.5Vbetweenitspositiveandnegativeterminals.Yourcarbatterymaintainsabout12Vbetweenitsterminals.Andthepotentialbetweenthetwoslotsinahouseholdelectricaloutletisabout120V.Youareprobablyalreadyfamiliarwithabasictruthaboutelectricpotential.Allotherthingsbeingequal,agreaterpotentialwillcreateagreatercurrent.Butwhatiselectricpotential?Watercanprovideagoodanalogy(althoughfarfromperfect!)forbothcurrentandpotential.Considerapipethatcomesoutofthebottomofalargetankofwater.Youopenthespigotandwaterflows.Theflowrateofthewaterisanalogoustocurrent.Commonsensetellsyouthatthehigherthewaterlevelinthetank,thehighertheflowrateinthepipe.Theheightofthewaterlevelisanalagoustoelectricpotential.Agreaterpotentialwillcauseagreatercurrent.Wherethisanalogyfailsiswiththebattery.Thetankstoreswaterandastheheightslowlydecreases,sodoesthewaterflow.Abatterydoesnotstorecharge!Itisalwayselectricallyneutralandforwhateveramountofchargeleavesoneterminal,anequal英文完整形式中文意思PLCEMFCNCMPSDC第4页共4页amountmustcomeintotheother.Abatteryismoreanalogoustothewaterpump.Abattery,therefore,isanelectronpump!Ithastheabilitytopushelectronsdirectlyproportionaltoitsvoltagerating.And,itdoesthisthroughachemicalreaction.Thebatterybecomesdischarged,(anunfortunatelymisleadingterm),whenthechemicalsinthebatteryareusedup.Mostbatteriesmaintainafixedpotentialuntilneartheendoftheirlife.The120Vpotentialofahouseholdoutletisproducedinaverydifferentway.1.Whatiselectricpotential?Whatisanothertermpeoplewilluseforit?2.Whatisthepotentialbetweenthetwoslotsinahouseholdelectricaloutlet?3.Whatistherelationshipbetweenthepotentialandthecurrentwhenallotherthingsareequal?4.Whatcanbeagoodanalogy(althoughfarfromperfect!)forbothcurrentandpotential?5.Whatisanalogous(类似)tocurrent?