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1、装配钳工中级试题1.,thesubstanceofprofessionalethicsis(C).A,improvepersonallife,B,andincreasethewealthofsocietyC,establishanewsocialistattitudetowardslabor,Dandenhancethesenseofcompetition2.violationofsafetyproceduresis(A).A,formulatetheproductionprocess,Bandimplementtherulesandregulationsofsafetypr
2、oductionC,strengthentheconceptoflegalsystem,D,andenforcethelawsandregulationsonnationalsafetyinproduction3.,notconsistentwiththerequirementsofclean,civilizedproductionrequirements(C).A,implementoperatingprocedures,B,implementationrulesandregulationsC,theworkisnotrequiredforclothing,D,andcre
3、ategoodconditionsofproduction4.theerrorinthefollowingstatementis(C).A,forthepartsoftheribs,spokesandthin-walled,suchaslongitudinalcutting,thesestructuresarenotpaintedcrosssectionsymbols,Butitwillseparatetheadjacentpartswiththicklines.B,whenthestructureoftherib,spokeandholeontherevolvingpart
4、ofthecomponentisnotinthecuttingplane,thesestructurescanberotatedtotheplaneofcuttinganddrawnC,thelongerparts(shafts,rods,profiles,connectingrods,etc.)inthedirectionofthelengthofthesameshapeorchangeaccordingtocertainrules,itcanbebrokentoshortenthedrawing.Whenusingthisdrawingmethod,thesizecann
5、otbemarkedbytheoriginallengthofthemachineD,whenaplaneonarevolvingpartcannotadequatelyrepresentaplaneinagraph,itcanberepresentedbyplanesymbols(twofinesolidlinesintersecting)5.todeterminethebasicdeviation,mainlytodetermine(A).A,tolerancezonelocation,B,tolerancezonesizeCandmatchingaccuracyD,wo
6、rkpieceprocessingaccuracyThestructureof6.ductileironcanbe(B).A,ferrite+group,flocculentgraphite,B,ferrite+spheroidalgraphiteC,ferrite+pearlite+flakegraphite,D,pearlite+flakegraphite7.theaccuracyofcylindricalgeardriverequireskinematicaccuracy,workstability(D)andotheraspectsofprecisionrequire
7、ments.A,geometricaccuracyB,parallelismC,perpendicularityD,contactprecision8.(A),mainlycooling.A,aqueoussolutionB,emulsionC,cuttingoilD,rustinhibitor9.whenusingamarkerline,theanglebetweentheneedleandthemarksurfaceshallbemaintained(A).A,40degreesto60degree
