机电英语期末考试B.doc

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1、2011级第八学期《机电专业英语》期末试卷（B）考试班级五年制高职：2011级机电命题人刘博教材名称机电专业英语讲授章节、时数3章20节考核方式考查考试形式闭卷期末考试所占百分比60%系主任签字教务处签字题号一二三四五六七总分得分一．单词解释20’1．mill2．grinder3．shaft4．screw5．tolerance6．spring7．key8．bearing9．coupling10．actuator二．选择题20’1.Theword______itselfusuallyreferstothed

2、eteriorationofmetalsandceramics,whilesimilarphenomenainplasticsgenerallycalled______.A.recrystallization….corrosionB.recrystallization…degradationC.degradation…corrosionD.corrosion…degradation2.Mostframes_______castiron,weldsteel,composition,orconcrete.A.

3、aremadefromB.aremadeupofC.wasproducedbyD.wasconsistof3.Rotatingshaftsparticularlythosethatrunathighspeeds,mustbedesignedtoavoidoperationat_____speeds.A.lowB.overloadC.criticalD.hollow4.Althoughcastironisafairlycheapmaterial,eachcastingrequiresa.A.patternB

4、.modelC.moldD.patent5.Theterm_____isusedtodescribejointswithsurfacecontact,aswithapinsurroundedbyahole.A.highpairB.lowpairC.surfacepairD.rotarypair6.Manufacturingcanbedefinedasthe_____ofrawmaterialsintousefulproductsthroughtheuseoftheeasiestandlest-expens

5、ivemethods.A.transformationB.processingC.processD.transforming7.Theplanerandkneetypesofmillingmachineis_____becauseofitsflexibility.A.usedmostcommonlyB.mostpopularC.themostcommonlyusedD.mostpowerful8.Asaresult,thesystemwillvibrateatthefrequencyofthe_____f

6、orceregardlessoftheinitialconditionsornaturalfrequencyofthesystem.A.actionB.excitationC.outD.act9.Beforetwocomponentsareassembledtogether,therelationshipbetweenthedimensionsofthematingsurfaces_______.A.mustbegivingoutB.shouldprintedclearlyC.mustbespecifie

7、dD.shouldbeclearlynoted10.Themainpracticaladvantageoflowerpairsistheirbetterabilitytotraplubricantbetweentheir______surfaces.A.envelopingB.matingC.outerD.outside三．阅读理解30’1.Thestudentswerehavingtheirchemistry（化学）class.MissLiwastellingthechildrenwhatwaterwa

8、slike.Afterthat，sheaskedherstudents，"What’swater？”Noonespokeforafewminutes．MissLiaskedagain，“Whydon’tyouanswermyquestion？Didn’tItellyouwhatwaterislike？”Justthenaboyputuphishandandsaid，“MissLi，youtoldusthatwaterhasno