高级电焊工理论复习题一（a senior welder theoretical review questions）

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1、高级电焊工理论复习题一（Aseniorweldertheoreticalreviewquestions）AseniorweldertheoreticalreviewquestionsAchoice(firstto80questions,eachquestion1pointsoutof80points):Theweldingcracktest1.obliqueYgroovespecimensonbothsidesoftheweldingrestraintweldgroove(open).(A)X-(B)Y-(C)Y(D)UobliqueshapeshapeThe2.pintest,thet

2、hicknessofthebaseplate(generally).(A)5~l0mm(B)10~30mmC)30~40mm(D)40~45mm3.thevarestrainttestwhenthethicknessofthetestplate(up).(A)5mm(B)10mm(C)16mm(D)20mm4.bendingtestwasusedtodeterminetheweldmetalorweldedjoints().(A)toughness(B)density(C)(D)plasticfatigue5.bendingtest,carrycurved(assessment).(A)

3、(B)plasticweldweldqualityofsingleroot(C)multilayerweldinginterlayerdefects(D)thebondingstrengthbetweentheweldinglayerandbasematerial6.ofthejointpipebendingspecimenshouldcheckthespecimencut(a).(A)1(B)2(C)3(D)47.bendtothespecifiedangle,thetensilesurfacehasalength(for)thelongitudinalcracksordefectsa

4、sunqualified(A)1mm(B)2mm(C)2.5mm(D)>3mm8.thesamekindofmaterial,whenonesidewelding,thebendinganglethandoublewelding(qualified).(A)the(B)big(C)small(D).9.conventionaltestmethodforthedeterminationofbrittletransitiontemperature(is).(A)fatiguetest(B)(C)tensiletestbendingtestimpacttest(D)10.UshapedandV

5、shapedspecimens,themeasuredvalueofimpact()shallcarryoutconversionbetweeneachother.Yield(A)(B)(C)plasticelastictoughness(D)Metalmaterialsareprocessedintostandardsamplesof11.impactteststobemeasured,andthenputin,()isplacedinthegapofthesampleshouldbebacktothedirectionofimpactpendulum.(A)supportoperat

6、ionmachine(B)onthedisplacementofthesupportonthemachine(C)elevatorbearings(D)bearingtester.Impacttesttemperatureforthesteelshallbe12.(theminimumdesigntemperatureofcryogenicvessel)vesselorthecompressionelement.(A)isequaltoorhigherthanthe(B)isgreaterthanorequaltoorlessthantheabove(C)(D)aboveorbelow1

7、3.byX-raydetectionafterthedefectimagesappearonthefilm(notincluded).(A)blacklinecontinuousdarkstripes(B)(C)alightimage(D)intermittentblack14,Xraypenetrationabilityisdecidedbythe().(A)wavelength(B)irradiationposition(C)a