知道智慧树网课：Weldability of Metals and Alloys金属焊接性（太原理工大学）章节测试满分答案

1【单选题】(2分)Withcarbonequivalent(),thesteelhasalowtendencytohardenandcoldcr□口口口□口口口B2【单选题】(2分)()isnotafactorthatafOjointtype○D3【多选题】(2分)ThecalculationformulaofcarbonequivalentofthelWSconsiderstheinfluenceof()oA.4【单选题】(2分)MaximumcrackdistancehasbeenusedtoallowmoreaccuratedeterminatC5【多选题】(2分)Weldabilityisnoteasilyquantified,andcandependonavarietyoffactors,including().A.第二章测试1【单选题】(2分)Theweldabilityofhigh-carbonsteelisworsethanthatoflow-carbonsteelbecausehnsteeliswith().□口口口□口口口A2【单选题】(2分)Normally,becauseofauto-tempering,thepostweldmicrostruct□口口口□口口口D3【多选题】(2分)QTLAsteelisnotsusceptibletosolidificationcrackingbecauseitiswith().A.4【多选题】(2分)5【判断题】(1分)WhenyouweldHTLAsteels,you'dbettertotakeadvantageofauto-teB6【多选题】(2分)Auto-temperingoccursafterweldingwhen7【判断题】(1分)Beforedesigningweldingprocedure,we'dbettertoanalyzetheweldabiAB18【判断题】(1分)Toremedytheunderbeadcracking,weneedtoreducecoolingratewhenweweldoil○错○对AB9【单选题】(2分)Ifthecarboncontentofatypeofsteelis0.○D【判断题】(1分)A2【判断题】(1分)PWHTwouldbehelpfultopreventtheformationofwelddecayinaustB3【判断题】(1分)B4【判断题】(1分)NopreheatingisrecommendedduringwieldingofduplAA本题解析本题解析5【判断题】(1分)ThefuncitonofMoissimilartothatofChromiumthattendstostabilizealfa-Fe(bcc)anemperaturecounterpartdelta-Fe(bcc).○错A.A1【单选题】(2分)he().参考答案参考答案B2【单选题】(2分)Themainalloyingelementisfor7xxxalloys().○A.C3【判断题】(1分)Liquationcrackingandhydrogen-inducedcrackinginthePMZofalumisedbythecombinationofasusceptiblemicrostructureandthepresenceoftensi○错○对A.B4【判断题】(1分)Freonhasbeenaddedtotheshieldinggastoreducehydr参考答案参考答案B5【判断题】(1分)Purealuminumisnotsusceptibletosol对参考答案参考答案B6参考答案参考答案A7参考答案参考答案A8对错B9【判断题】(1分)AfineequiaxeddendriticstructurehasalowersusceptibilitytocrackingthanacoarsecolAB第五章测试1【单选题】(2分)Generally,thecarboncontentofcastironsisgenerallyi○B2【多选题】(2分)Castironscanbeconvenientlygroupedaccordingtotheirstructure,mechanicdweldability;theyare().A.BB3【单选题】(2分)()isextremelyhardandbrittle,inwhichmuchofthecarboninisretainedinthewithoutgraphiteflak○D4【判断题】(1分)CastingironswithpearliticmatrixownhigherstrengththanA.A5【判断题】(1分)MalleableironsaremorereadilyweldA参考答案参考答案B6【判断题】(1分)Thebrazingweldneedannealingheattreatmen