机电英语期末考试B

延边职业技术学院2014~2015学年度第二学期期末考试第1页共2页班级：姓名：学号：---------------○---------------------○---------------------○---------------------○---------------------○---------------------○---------------------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______itselfusuallyreferstothedeteriorationofmetalsandceramics,whilesimilarphenomenainplasticsgenerallycalled______.A.recrystallization….corrosionB.recrystallization…degradationC.degradation…corrosionD.corrosion…degradation2.Mostframes_______castiron,weldsteel,composition,orconcrete.A.aremadefromB.aremadeupofC.wasproducedbyD.wasconsistof3.Rotatingshaftsparticularlythosethatrunathighspeeds,mustbedesignedtoavoidoperationat_____speeds.A.lowB.overloadC.criticalD.hollow4.Althoughcastironisafairlycheapmaterial,eachcastingrequiresa.A.patternB.modelC.moldD.patent5.Theterm_____isusedtodescribejointswithsurfacecontact,aswithapinsurroundedbyahole.A.highpairB.lowpairC.surfacepairD.rotarypair6.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.outside三．阅读理解30’1.Thestudentswerehavingtheirchemistry（化学）class.MissLiwastellingthechildrenwhatwaterwaslike.Afterthat，sheaskedherstudents，What’swater？”Noonespokeforafewminutes．MissLiaskedagain，“Whydon’tyouanswermyquestion？Didn’tItellyouwhatwaterislike？”Justthenaboyputuphishandandsaid，“MissLi，youtoldusthatwaterhasnocolourandnosmell．Butwheretofindsuchkindofwater？Thewaterintheriverbehindmyhouseisalwaysblackandithasabadsmell．”Mostofthechildrenagreedwithhim．“I’msorry，children．”saidtheteacher，“Ourwaterisgettingdirtieranddirtier．That’saproblem．1．Thestudentswerehavingtheir_______class．A．EnglishB．ChineseC．chemistryD．maths2．MissLiwastellingthechildrenwhat______waslike．A．waterB．airC．earthD．weather3．Aboysaid，”Thewaterintheriverbehindmyhouseisalways_______．”A．whiteB．blackC．cleanD．clear4．Mostofthechildren_______theboy．A．agreedwithB．wrotetoC．heardfromD．sentfor5．Thewaterintheriverhascolourandsmellbecauseitisgetting_______．A．moreandmoreB．lessandlessC．cleanerandcleanerD．dirtieranddirtier2.Workingdrawingsarethecompletesetofstandardizeddrawingsspecifyingthemanufactureandassemblyofaproductbasedonitsdesign.Thecomplexityofthedesigndeterminesthenumberandtypesofdrawings.Workingdrawingsmaybeonmorethanonesheetandmaycontainwritteninstructionscalledspecifications.Workingdrawingsareblueprintsusedformanufacturingproducts.Therefore,thesetofdrawingsmust:(a)completelydescribetheparts,bothvisuallyanddimensionally;(b)showthepartsinassembly;(3)identifyalltheparts;and(4)specifystandardparts.Thegraphicsandtextinformationmustbesufficientlycompleteandaccuratetomanufactureandassembletheproductwithouterror.Generally,acompletesetofWorkingdrawingsforanassemblyincludes:(1)Detaildrawingsofeachnonstandardparts.(2)Anassemblyorsubassemblydrawingshowingallthestandardandnonstandardpartsinasingledrawing.(3)Abillofmaterials(BOM).(4)Atitleblock.Adetaildrawingisadimensioned,multiviewdrawingofasinglepart,describingthepart’sshape,size,material,andsurfaceroughness,insufficientdetailfortheparttobemanufacturedbasedonthedrawingalone.Detaildrawingsareproducedfromdesignsketchesorextractedfrom3-Dcomputermodels.TheyadherestrictlytoANSIstandardsandthestandardforthespecificcompany,fordimensioning,assigningpartnumbers,notes,tolerances,etc.Inanassembly,standardpartssuchasthreadedfastenersandbearingsarenotdrawnasdetails,butareshowninthe延边职业技术学院2014~2015学年度第二学期期末考试第2页共2页班级：姓名：学号：---------------○---------------------○---------------------○---------------------○---------------------○---------------------○---------------------assemblyview.Standardpartsarenotdrawnasdetailsbecausetheyarenormallypurchased,notmanufactured,forassembly.Forlargeassembliesorassembledwithlargeparts,detailsaredrawnonmultiplesheets,andaseparatesheetisusedfortheassemblyview.Iftheassemblyissimpleorthepartsaresmall,detaildrawingsforeachpartofanassemblycanbeplacedonasinglesheet.Multipledetailsonasheetareusuallydrawnatthesamescale.Ifdifferentscalesareused,theyareclearlymarkedundereachdetail.Also,whenmorethanonedetailisplacedonasheet,thespacingbetweendetailsiscarefullyplanned,includingleavingsufficientroomfordimensionsandnotes.1.Basedonthemessage,whichofthefollowiswrong?A)stand