机械专业英语试题及答案汇编文档格式.docx

机械专业英语试题及答案汇编文档格式.docx

《机械专业英语试题及答案汇编文档格式.docx》由会员分享，可在线阅读，更多相关《机械专业英语试题及答案汇编文档格式.docx（17页珍藏版）》请在冰豆网上搜索。

2、消费者分析

月生活费人数（频率）百分比

（2）物品的独一无二

（3）个性体现

4、宏观营销环境分析

（1）价格低

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.slide

2.Thoughframematerialanddesignshouldhandledamping,aresometimesbuiltintoframesectionstohandlespecificproblems.

A.beamsB.holesC.dampersD.screw

3.Themaximumallowabledeflectionofashaft______determinedbycriticalspeed,gear,orbearingrequirements.

A.oftenB.mustC.wasD.isusually

4.Wewillhaveto_____tobetterandbettersolutionsaswegeneratemoreinformation.

A.repeatmanytimesB.iteratingC.iterateD.tryways

5.Ifaproductconfigurationis_______specifiedandthenexaminedtodeterminewhethertheperformancerequirementsaremet.

A.finallyB.tentativelyC.temporaryD.havebeen

6.Manufacturingcanbedefinedasthe_____ofrawmaterialsintousefulproductsthroughtheuseoftheeasiestandlest-expensivemethods.

A.transformationB.processingC.processD.transforming

7.Theplanerandkneetypesofmillingmachineis_____becauseofitsflexibility.

A.usedmostcommonlyB.mostpopular

C.themostcommonlyusedD.mostpowerful

8.Asaresult,thesystemwillvibrateatthefrequencyofthe_____forceregardlessoftheinitialconditionsornaturalfrequencyofthesystem.

A.actionB.excitationC.outD.act

9.Beforetwocomponentsareassembledtogether,therelationshipbetweenthedimensionsofthematingsurfaces_______.

A.mustbegivingoutB.shouldprintedclearly

C.mustbespecifiedD.shouldbeclearlynoted

10.Themainpracticaladvantageoflowerpairsistheirbetterabilitytotraplubricantbetweentheir______surfaces.

A.envelopingB.matingC.outerD.outside

11.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…degradation

12.Mostframes_______castiron,weldsteel,composition,orconcrete.

A.aremadefromB.aremadeupof

C.wasproducedbyD.wasconsistof

13.Rotatingshaftsparticularlythosethatrunathighspeeds,mustbedesignedtoavoidoperation

atspeeds.

A.lowB.overloadC.criticalD.hollow

14.Althoughcastironisafairlycheapmaterial,eachcastingrequiresa.

A.patternB.modelC.moldD.patent

15.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