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1、初级钳工试题及答案(Juniorlocksmithexaminationquestionsandanswers)JuniorlocksmithexaminationquestionsandanswersFirst,multiple-choicequestions:(1pointspersubject,totalscore80points)1,universalanglerulercanmeasureanyangleoftherange.A,0degreeto360degreeB,50degreeto140degreeC,0deg
2、reeto320degreeD,0degreeto180degree2.Theteethofthegeneralhandreameraredistributedonthecircumference.A,homogeneousB,inhomogeneousC,asymmetricD,arbitrary3,inthesurfaceroughnessevaluationparameters,thearithmeticaveragedeviationcodeis().A,RpB,RaC,RyD,Rz4,grindingoftheamou
3、ntofcuttingisverysmall,sogrindingmargincannot().A,toobigB,toosmallC,thickD,thicker5.Thefirsttwodigitsofthegradeofalloystructuralsteelindicatethattheaveragecarboncontentis().A,onehundredthousand,B,C,afewD,afew6,fittercommonlyusedtoolmaterialshavehighspeedsteeland()two
4、categories.A,cementedcarbideB,carbontoolsteelC,ceramicD,diamond7,whentheinterferencefitissmall,thebearingcanbepressedby()method.A,B,mechanicalpressuresleevepressinC,usingthetemperaturedifferenceD,directtype8,()isthebasisofenterpriseproductionmanagement.A,productionpl
5、anB,productionplanC,teammanagementD,productionorganizationIn9,steelandcastironmachininginternalthreadofthesamediameter,thediameter(bottom).A,thesamebigBandsteelpartsareslightlylargerthanthecastings,C,thecastingsareslightlylargerthanthesteelparts,D,andthedifferenceist
6、woscrewmomentsChiphole10,theformationofcirculartoothrounddie().A,rakefaceB,rearfaceC,vicerakefaceD,cuttingplane11,drill()iszero,theedgenearthecuttingedgeandtheholewallfrictionismoreserious,easytoheatandwear.A,frontangleB,backangleC,transverseedgeangleD,viceposteriora
7、ngle12,inordertoachievethepurposeofreliableandrobustthreadconnection,thereisacertainrequirementbetweentheteeth.A,frictiontorqueB,tighteningtorqueC,preloadD,frictionforce13,withforcewrenchtomakethepreloadreachthegivenvalueis().A,controltorquemethodBandcontrolboltelong
8、ationmethodC,controlnuttwistanglemethodD,controlfrictionmethod14,thewormdrivemechanismassembly,shouldbeengagedinthequalityoftheinsp