[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fkXNsuCrnCMd_KwvduOwn9Lm4YQ_D_3gu_FNIMT_Kemk":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":18,"related":19,"source":29,"type":30},[],"2023-06-21 10:24:41",75693601,[8,9,10],"高碳钢","铸铁","低碳钢",{"count":12,"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},10,"cba63b6a452c49e91ce68750b4cec1e5","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8b6afc6335e139198d8c0533669a7c09.jpg","机械制造基础","work_28271636","第十二次作业","下列材料中具有良好的焊接性能的是( )",[20,31,40,43,52,63,72,81,88,96],{"answer":21,"createTime":5,"id":22,"options":23,"question":28,"source":29,"type":30},[],75693599,[24,25,26,27],"埋弧焊","电渣焊","点焊","氩弧焊","下面焊接方法中属于压焊的是","v1",0,{"answer":32,"createTime":5,"id":33,"options":34,"question":39,"source":29,"type":30},[],75693600,[35,36,37,38],"Q235-A","16Mn","45钢","35CrMoV","在下列钢中焊接性较好的是( )",{"answer":41,"createTime":5,"id":6,"options":42,"question":18,"source":29,"type":30},[],[8,9,10],{"answer":44,"createTime":5,"id":45,"options":46,"question":51,"source":29,"type":30},[],75693602,[47,48,49,50],"电阻焊","二氧化碳气体保护焊","钎焊","摩擦焊","熔焊是现代工业中主要的焊接方法,下列方法中属于熔焊的是",{"answer":53,"createTime":54,"id":55,"options":56,"question":61,"source":29,"type":62},[],"2023-06-21 10:25:42",75695803,[57,58,59,60],"不均匀性","运动性","瞬时性","均匀性","焊接热过程是一个复杂的热过程,它不同于一般的整体均匀加热,具有以下特点",1,{"answer":64,"createTime":54,"id":65,"options":66,"question":71,"source":29,"type":62},[],75695804,[67,68,69,70],"闪光对焊是先加压后通电","电渣焊主要用于厚壁压力容器、厚板等大型构件的制造,焊接厚度应大于40mm","氩弧焊适合于化学性质活泼的非铁金属的焊接","钨极氩弧焊在焊接过程中, 电极本身不熔化,需另用焊丝作为填充金属","下面对于焊接方法的描述正确的是",{"answer":73,"createTime":54,"id":74,"options":75,"question":80,"source":29,"type":62},[],75695805,[76,77,78,79],"X形坡口","Z形坡口","I形坡口","V形坡口","手弧焊时,对接接头常用的坡口形式有:( )",{"answer":82,"createTime":54,"id":83,"options":84,"question":87,"source":29,"type":62},[],75695806,[85,86,50,25],"手工电弧焊","缝焊","焊接方法可分为三大类, 即熔焊、压焊和钎焊,下面属于熔焊的是",{"answer":89,"createTime":54,"id":90,"options":91,"question":94,"source":29,"type":95},[],75695807,[92,93],"正确","错误","焊接不一定要加热,有些材料只加压也可以焊接",3,{"answer":97,"createTime":54,"id":98,"options":99,"question":100,"source":29,"type":95},[],75695808,[92,93],"钢中的合金元素越多,则焊接性越好"]