雨课堂学堂在线学堂云《Mechanical Drawing（重庆电子科技职业）》单元测试考核答案

第1题Whentheproportionprovidedinthenationalstandardcannotmeettherequirements,itcanbefreelydeterminedaccordingtotheneeds.()AexactnessBwrong第2题Inthemechanicaldrawing,thelinetypeofthecenterlineis()ADrawafinelineBThickdotdrawinglineCfinelineDFinedoubledotdrawingline第3题Thefollowingcorrectdescriptionoftheproportionofthepatternis()A1:2isthereducedratioB1:2istheratiooftheamplificationCThescalewhendrawingdrawingcanbeanarbitraryvalueDThescaleofcomputersoftwarecanbeanyvalue第4题Thenationalstandard"MechanicalDrawingDrawing"(GB/T4457.4--2002)stipulatesthe()linescommonlyusedinmechanicaldrawings.A5B7C9D15第5题Inthemechanicaldrawing,thevisiblecontourlineis()AheavylineBfinelineCwavelineDfinedottedline第6题Theradiusofthearcwiththesameradiusonthesameplaneandthesamecenterangleofthecirclecanbemarkedonlyonce,anditdoesnotneedtomarkthenumberofarcs.()AexactnessBwrong第7题Inthemechanicaldrawing,theinvisibleprofiletypeis()AheavylineBfinelineCwavelineDfinedottedline第8题Whenmarkingdimensions,thesizelinecanbereplacedbycontourline,centerline,axis,etc.()AexactnessBwrong第9题Markthediameterwhenthecenterangleisgreaterthan180degrees.()AexactnessBwrong第10题Thelinetypefordrawingdimensionallinesanddimensionalboundariesis()AheavylineBfinelineCwavelineDfinedottedline

第1题Whendrawingthemechanicalpartsdrawings,generallyuse()ACenter-basedprojectionmethodBParallel-basedprojectionmethodCOrthographyDInclinedprojectionmethod第2题Thefrontprojectionreflectsthebodyinthethree-sideprojectiondiagram().AUpanddown,leftandright,beforeandbackofthethreedirectionsBLeftandright,frontandrearorientationrelationshipCUpanddown,leftandrightorientationrelationshipDUpanddown,frontandbackorientationrelationship第3题Whenthestraightline,planeandprojectionsurfaceontheobjectaretilted,theprojectionofthestraightlineisastraightlinewithashortenedlength,andtheprojectionoftheplaneisaflatshapewithareducedarea.Thisfeatureisknownas().AsimilarityBAccumulationCGeneralityDcollimation第4题ThelineABonlytheWsurfaceprojectionreflectsthesolidlength,andthelineis().AhorizonBfrontallineCSideflatlineDLateralverticalline第5题Drawthethirdprojectionofthefollowinglines,andjudgetherelativepositionofthelinetotheprojectionplane().AhorizonBfrontallineCLateralverticallineDThegeneralpositionisstraight第6题Thetypeoftheplaneshowninthefigureis().AhorizontalplaneBPositiveplaneCSideplaneDGeneralpositionplane第7题IfpointAisontheWprojectionsurface,then(

).AThexcoordinateoftheApointis0BTheycoordinateoftheApointis0CThez-coordinateoftheApointis0DAx,y,z,thecoordinatesarenot0第8题TheVandHsurfaceprojectionofthestraightlineABallreflectthesolidlength,andthestraightlineis().AhorizonBTheverticallineCSideflatlineDLateralverticalline第9题LineABonlytheWsurfaceprojectionreflectsthesolidlength,andthelineis().AhorizonBfrontallineCSideflatlineDLateralverticalline第10题Thetypeoftheplaneshowninthefigureis().ALeadverticalsurfaceBPositiveplaneCSideplaneDGeneralpositionplane【章节测验】基本立体识读与绘制【ChapterTest】Basic3DShapeRecognitionandDrawing第1题Whentheplanecutcone,whenthesectionplanepassestheconethroughthecone,theintersectionlineis().AisoscelestriangleBRoundorellipticCpara-curveDhyperbola第2题TheconeshowninthefigureiscutbytheverticalsurfaceP,andtheshapeofthecutlineis().AdeltaBOvalandstraightlineCTheparabolaandstraightlineDBicurvesandstraightlines第3题Whencuttingthecolumn,whenthesectionalplaneisparalleltotheaxisofthecylinder,theintersectionlineis().AcircleBrectangleCovalDIt'spossible第4题TheconeshowninthefigureiscutbytheverticalsurfaceP,andtheshapeoftheintersectionlineis().AdeltaBBicurvesandstraightlinesCOvalandstraightlineDTheparabolaandstraightline第5题Thesix-prismconeshowninthefigureiscutoffbytheverticalsurfaceP,andtheshapeofthecutlineis().AdeltaBpentagonChexagonDheptagon第6题Whentheplaneintersectstheball,theprojectionoftheinterceptlinecanbe().AcircleBstraightlineCovalDpara-curve正确答案：ABC第7题TheconeshowninthefigureiscutbytheverticalsurfaceP,andtheshapeoftheintersectionlineis().AdeltaBOvalandstraightlineCTheparabolaandstraightlineDBicurvesandstraightlines第8题Theplaneintersectstheball,andregardlessoftherelativepositionoftheplaneandtheball,theintersectionlineisalways().AcircleBovalChyperbolaDpara-curve第9题Thecylindershowninthefigureiscutbytwoplanes,andtheincisionspaceshapeis().AThecombinationofellipsesandrectanglesBCombinationofellipsesandellipsesCCombinationoftheellipseandthehyperbolaDThecombinationofcirclesandrectangles第10题Theshapeoftheintersectionlinewhenthesectionalplaneslopestheaxisofthecylinderis().ArectangleBcircleCdeltaDoval

【章节测验】工程形体轴测图的绘制【ChapterTest】DrawingofEngineeringFormIsometricDrawing第1题Intheobliqueparaxialsurveygraph,thegraph()ontheaxialexpansioncoefficientof1isparalleltothetwoaxes.AlargenBdiminutionCuniformity第2题Drawthepositiveisometricdiagram,firstdrawtherectangularcoordinatesystemon()intheprojectiondiagram.AleftviewBbodyCaxonometricaldrawingDthreeviews第3题Inthepositiveisometricmap,theaxialexpansioncoefficientis().A0.82B1C1.22D1.5第4题Theaxialmeasurementprojectionmethodrecommendedbythenationalstandardis().APositiveaxisprojectionandobliqueaxisprojectionBPositiveequaltestandpositivesecondarytestCPositivetwotestandobliquesecondtestDPositiveandequaltestandobliquesecondtest第5题TheAnglebetweenthetwoadjacentaxismeasurementaxesiscalled().AincludedangleBdihedralCinteraxialangleDangleofroll第6题Intheobliqueparaxialmap,whenthetwoaxialexpansioncoefficientis1,theaxialexpansioncoefficientoftheotheraxisis().A0.5B0.6C0.82D1.22第7题Theprojectionoftheaxialdeformationcoefficientontheprojectionsurfaceoftheaxialmeasurement,called().APositiveaxismeasurementprojectionBSlantaxismeasurementprojectionCPositiveequitestprojectionDcabinetprojection第8题Drawthepositiveandequalaxismapoftheball,suchasusingthesimplifiedexpansioncoefficient,diametermagnification()times.A0.82B1C1.22D1.5第9题Drawaregularequaxialsurveyoftheslottedcylinder,firstdraw()theellipseoftheupperandlowerendsurfaceandtheellipseofthebottomplaneofthegroove.AtroughBthreeviewsCverticalviewDcircularcolumn【章节测验】组合体的绘制与识读【ChapterTest】DrawingandRecognitionofCompositeBodies第1题Dimensionsmarkedonthedrawing,ifthesizenumberisinbrackets,itis()AThedimensionisafixedsizeBThisdimensionisthepositioningdimensionCThissizeisthereferencesizeformachiningandfabricationDThisdimensionistheexcesssize第2题Whatarethefollowingrelationshipsbetweentheadjacentsurfacesofthebody.()AparallelandlevelBNotflatCtangencyDintersect正确答案：ABCD第3题Theholeinthecenterofthecircleonthedimensionreferencebase()AdiameterBTheshapesizeClocationdimensionDOverallsize第4题Thegenerationmethodofthecombinationis().AcompositionBslicingCOverlayandcutDtangency第5题Assemblyisinthreedirections:length,widthandheight()ATwobenchmarksBThereareatleast2benchmarksavailableCThreebenchmarksDThereareatleast3benchmarksavailable第6题Thedimensionofthearcisgenerallymarkedin()AOnthemainviewBOntheviewCOntheleftviewDProjectedasontheviewofthecirculararc第7题Whenthesurfaceofthetwoforms(),thejunctionisseparatedbywires.AtangencyBcoplaneCsmoothconnectionDNotonthesameside第8题Inthesameplane,thesamestructureandsizeofthesamefourroundcorners,thecorrectdimensionis()AR10B4R10C4-R10D4×R10第9题Fourholeswiththesamestructureandsizeinthesameplanearecorrectly()AΦ10B4Φ10C4-Φ10D4×Φ10第10题Whenaplaneandasurfacearecombinedwithstereotangent,atthetangentpoint().ANotangentlineBThereisacrosslineCThereisnoboundaryDThereisadividingline

【章节测验】机械图样基本表示法【ChapterTest】BasicRepresentationMethodsofMechanicalDrawings第1题Selectthecorrectsectiondrawing()ABCD第2题Whentheremovedsectionmapisconfiguredontheextensionlineofthesectionposition,andthefigureissymmetrical,thesectionsymbolrepresentingthesectionpositionisdrawnwiththe()lineADrawafinelineBFinedoubledotdrawinglineCfinelineDheavyline第3题Judgewhetherthefigurebelowiscorrect.()AexactnessBwrong第4题Thefull,halfandlocalsectionsuseasinglesectionplane.()AexactnessBwrong第5题Thenumberandproportionofthelocalenlargedmaparemarkedintheenlargedmap()AsuperjacentBlowerpartCBothaboveandbelowareavailableDNoneofthethreeanswersarecorrect第6题Thecorrectdescriptionofthelocalviewis()AMustmarkBDon'tmarkCCanbemarkedornotmarkedDMarkwhennecessary第7题Whatiscorrectabouttheobliqueviewbelowis()ATheprojectionsurfaceisthebasicprojectionsurfaceBTheprojectiondirectionisthebasicprojectiondirectionCTheprojectionsurfaceistheauxiliaryprojectionsurfaceDAllthreeareright第8题Whatiscorrectaboutthefollowingdescriptiontotheviewis()AYoucandrawalocaltotheviewBTheprojectionsurfaceisthebasicprojectionsurfaceCThedirectedviewmustbethefullviewDTheprojectiondirectionisthebasicprojectiondirection第9题Thecorrectnotationforobliqueviewsis()AMustmarkBDon'tmarkCCanbemarkedornotmarkedDMarkwhennecessary

【章节测验】常见机件的规定画法【ChapterTest】StandardDrawingMethodsforCommonMechanicalParts第1题Thefollowingspringsarestandardpartsare().AAcylindricalspiralcompressionspringBAcylindricalspiralstretchingspringCAcylindricalspiraltorsionspringDleafspring第2题Connectingthetwoboardstogethercanbeconnectedusing().AstudBboltCnutboltDInnerhexagonalheadscrew第3题Thecharacteristiccodeoftheordinarythreadisindicatedby().AMBGCRpDNPT第4题Ifthesizeoftheplainplainkeyiswidthb=8,heighth=7,andlengthL=25,theplainkeyshouldbemarkedas()accordingtothecurrentannotation.AKey8725(GB/T1096)BKey825(GB/T1096)CTheGB/T1096bondispresentat8725DTheGB/T1096bond,825第5题Intheviewofthenormalflatkeyconnection,intheaxialsectionview,press()todraw.ADon'tcutBcutawayviewCWithorwithoutsectionDNoneoftheaboveanswersarecorrect第6题Thenominaldiameteroftheboltisd=10,andthelengthisL=40,sothefollowingmarkiscorrectin().ABolt:GB/T5782M1040BBoltM1040CBoltM1040GB/T5782DBoltGB/T5782M4010第7题Thescaledrawingmethodofboltconnectionisbasedon()asthemainparameter,andthestructuresizeoftheotherpartsaredrawninacertainproportion.AMediumdiameterofthethreadontheboltBNominaldiameterofthethreadontheboltCThethreadontheboltDBoltlength第8题6Thetypecodeofthe208bearingis().A6B2C0D8第9题Thethrustbearingmainlybearsthe()load.AradialBaxialCRadialandaxialDslant第10题Whenitisnecessarytoexpresstheloadcharacteristicsandstructuralcharacteristicsofthebearing,the()drawingmethodcanbeused.ARegulationsonpaintingBFeaturepaintingmethodCGeneralpaintingmethodDSimplifythedrawingmethod第11题Apairofstraightcylindricalgearsareengagedwith()ontheviewreflectingthecircle.AfinelineBheavylineCfinedottedlineDDrawafineline第12题Theunitofthemodulusis()AmillimetreBriceCinchDNounit第13题Thenumberofteethoftheinvolutestraightcylindricalgeariscertain,andthelargerthemodulusis()AThesmallerthecircleofthetoothtopBThesmallerthefractionalcircleCThelargerthetoothangleDThelargerthegearofthegear

【章节测验】零件图的绘制与识读【ChapterTest】Drawingandreadingofpartdrawings第1题Thefunctionofthepartdrawingisthebasisformanufacturingandtestingtheparts.()AexactnessBwrong第2题Themainviewoftheforkframepartsisgenerallyselectedby().AProcessingpositionBoperatingpositionCLocationwheretheworkingpositionandshapefeaturesaremostpronouncedDsettingposition第3题Intheprocessofmappingcomponents,itisgenerallydrawnfirst().APartdiagramsketchBpartdrawingCAssemblysketchDassemblydrawing第4题Themainviewoftheshaftpartsshallplacetheaxis().AhorizontalBuprightCbias第5题Intheexpressionofthestructuralshapeoftheparts,theplacementstatusoftheshaft,sleeve,wheelanddiskpartsshouldconformtothe()positionoftheparts.AprocessBwork第6题Intheexpressionofthestructureandshapeoftheparts,theplacementstateoftheboxandforkframepartsshouldconformtothe()positionoftheparts.AprocessBwork第7题Whenthecarthreadandgrinding,thecaroftenleavestheshaftshoulderofthesurfacetobeprocessed.()AexactnessBwrong第8题Themodeslopeisthecommonprocessstructurein().AMechanicalprocessingpartsBColdextractionCsectionbarDfoundrygoods第9题Accordingtothenationalstandards,thevisibletransitionlinesaredrawnwith().AfinelineBDraw