机械专业英语试题及答案

课程机械工程专业英语课程性质（□必修□限选□任选）考试方式（□闭卷□开卷）一、选择题（在每题四个备选答案中选出一个正确答案，本大题共15小题，每小题1分，总计15分）1.Ifallpointsinalinkagemoveinparallelplanesthesystemundergoesplanarmotionandthelinkagemaybedescribedasa.A.planarmotionB.planarlinkageC.jointsD.slide2.Thoughframematerialanddesignshouldhandledamping,aresometimesbuiltintoframesectionstohandlespecificproblems.A.beamsB.holesC.dampersD.screw3.Themaximumallowabledeflectionofashaft______determinedbycriticalspeed,gear,orbearingrequirements.A.oftenB.mustC.wasD.isusually4.Wewillhaveto_____tobetterandbettersolutionsaswegeneratemoreinformation.A.repeatmanytimesB.iteratingC.iterateD.tryways5.Ifaproductconfigurationis_______specifiedandthenexaminedtodeterminewhethertheperformancerequirementsaremet.A.finallyB.tentativelyC.temporaryD.havebeen6.Manufacturingcanbedefinedasthe_____ofrawmaterialsintousefulproductsthroughtheuseoftheeasiestandlest-expensivemethods.A.transformationB.processingC.processD.transforming7.Theplanerandkneetypesofmillingmachineis_____becauseofitsflexibility.A.usedmostcommonlyB.mostpopularC.themostcommonlyusedD.mostpowerful8.Asaresult,thesystemwillvibrateatthefrequencyofthe_____forceregardlessoftheinitialconditionsornaturalfrequencyofthesystem.A.actionB.excitationC.outD.act9.Beforetwocomponentsareassembledtogether,therelationshipbetweenthedimensionsofthematingsurfaces_______.A.mustbegivingoutB.shouldprintedclearlyC.mustbespecifiedD.shouldbeclearlynoted10.Themainpracticaladvantageoflowerpairsistheirbetterabilitytotraplubricantbetweentheir______surfaces.A.envelopingB.matingC.outerD.outside11.Theword______itselfusuallyreferstothedeteriorationofmetalsandceramics,whilesimilarphenomenainplasticsgenerallycalled______.A.recrystallization….corrosionB.recrystallization…degradation题号一二三四五六七八总分得分C.degradation…corrosionD.corrosion…degradation12.Mostframes_______castiron,weldsteel,composition,orconcrete.A.aremadefromB.aremadeupofC.wasproducedbyD.wasconsistof13.Rotatingshaftsparticularlythosethatrunathighspeeds,mustbedesignedtoavoidoperationatspeeds.A.lowB.overloadC.criticalD.hollow14.Althoughcastironisafairlycheapmaterial,eachcastingrequiresa.A.patternB.modelC.moldD.patent15.Thetermisusedtodescribejointswithsurfacecontact,aswithapinsurroundedbyahole.A.highpairB.lowpairC.surfacepairD.rotarypair二、完型填空（在每个小题四个备选答案中选出一个正确答案，本大题共15小题，每小题1分，总计15分）Thetermshaftusuallyreferstoarelativelylongmemberofroundcrosssectionthatrotatesandtransmitspower.Oneormorememberssuchasgears,sprockets,pulleys,andcamsareusually(16)totheshaftbymeansofpins,keys,splines,snaprings,andotherdevices.Theselattermembersareamongthe“associatedparts”consideredinthistext,asarecouplingsanduniversaljoint,whichserveto(17)theshafttothesourceofpowerorload.Ashaftcanhaveanoroundcrosssection,antitneednotnecessarilyrotate.Itcanbestationaryandserveto(18)arotatingmember,suchastheshortshaftsthatsupportthenondrivingwheelsofanautomobile.Theshaftssupporting(19)gearscanbeeitherrotatingorstationarydependingon(20)thegearisattachedtotheshaftorsupportedbyitthroughbearings.Itisapparentthatshaftscanbesubjectedtovariouscombinationsofaxial,bending,and(21)loads,andthattheseloadsmaybestaticorfluctuating.Typically,arotatingshafttransmittingpoweris(22)toaconstanttorque(producingameantorsionalstress)togetherwithacompletelyreversedbendingload(producinganalternatingbendingstress).Inadditiontosatisfying(23)requirements,shaftsmustbedesignedsothatdeflectionsarewithinacceptablelimits.Excessive(24)shaftsdeflectioncanhampergearperformanceandcause(25)noise.Theassociatedangulardeflectioncanbeverydestructivetono-self-aligningbearings(eitherplainorrolling).(26)deflectioncanaffecttheaccuracyofacamorgeardrivenmechanism.Furthermore,thegreatertheflexibility-eitherlateralortorsional-thelowerthecorresponding(27)speed.考生注意：考试时间120分钟试卷总分100分共5页第1页专业班级学号姓名Sometimesmemberslikegearsandcamsaremade(28)withshaft,butmoreoftensuchmembers(whichalsoincludepulleys,sprockets,etc)aremadeseparatelyandthen(29)shaft.Theportionofthemountedmemberincontactwiththeshaftisthehub.Attachmentofthehubtotheshaftismadeinvarietyofways.Agearcanbegripped(30)betweenashoulderontheshaftandaspacer,withtorquebeingtransmittedthroughakey.Thegroovesintheshaftandhubintowhichthekeyfitsarecalledkeyways.16、A)cementB)attachedC)connectedD)concrete17、A)endureB)transmitC)serveD)connect18、A)supportB)meetC)satisfyD)strong19、A)aimsB)idlerC)terminalD)tomb20、A)duetoB)weatherC)whetherD)for21、A)elasticityB)torsionalC)inertiaD)acceleration22、A)subjectedB)…connectC)andD)From23、A)deeplyB)strengthC)clearlyunderstandD)longtime24、A)identifyB)crossC)roundD)lateral25、A)lucrativeB)objectionableC)attractableD)terrible26、A)MomentB)TormentC)TorsionalD)Movement27、A)highB)criticalC)firstD)important28、A)workB)idealizationC)integralD)simplification29、A)mountedontoB)refersC)referringtoD)indicates30、A)deformationsB)bendinglimitsC)laternalD)axially三、阅读理解（在每个小题四个备选答案中选出一个正确答案，填在题头的表中）（本大题共20小题，每小题2分，总计40分）Text1Engineeringdesignisasystematicprocessbywhichsolutiontotheneedsofhumankindareobtained.Theprocessisappliedtoproblems(needs)ofvaryingcomplexity.F