[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$funhnT1tpuAd-BhU-AR76OI3vco1NWo-TfyzaXht96_A":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2023-12-28 17:02:03",123282004,[8,9,10,11],"金属键结合","共价键结合","离子键结合","分子键结合",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},17,"cc85639ab4a7642b755abc6b0aa39ee8","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5bb872eef1603a536e52f9e5c3ef4a10.png","材料成型原理","36112d73fd91416796eddd06491a34f3","","焊接的物理本质使两个工件实现原子间的结合,对金属材料而言,即实现了( )",[21,33,42,51,60,63,72,81,90,96],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2023-12-28 17:02:02",123281991,[26,27,28,29],"清洗","预热","去除氧化膜","以上都不是","为了控制HAZ是组织转变及性能,防止冷裂纹,有时应对焊件进行( )","v1",0,{"answer":34,"createTime":5,"id":35,"options":36,"question":41,"source":31,"type":32},[],123281992,[37,38,39,40],"奥氏体","珠光体","铁素体","渗碳体","A代表()",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],123281996,[46,47,48,49],"热影响区","熔池","熔合线","焊缝","在焊接中的HAZ代表( )",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":31,"type":32},[],123281998,[55,56,57,58],"两者都有","匀质形核","非匀质形核","以上都不对","试验表明,焊接熔池的凝固过程是从边界开始的,是一种( )",{"answer":61,"createTime":5,"id":6,"options":62,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":31,"type":32},[],123282007,[67,68,69,70],"韧性","强度","脆性","以上都是","( )是指材料在塑性应变下和断裂全过程中吸收能量的能力",{"answer":73,"createTime":5,"id":74,"options":75,"question":79,"source":31,"type":80},[],123282011,[76,77,78,70],"辐射","对流","扩散","传热学的理论,在熔焊条件下,热源将热能传递给焊件时主要以( )为主",1,{"answer":82,"createTime":5,"id":83,"options":84,"question":89,"source":31,"type":80},[],123282015,[85,86,87,88],"焊接热过程","焊接化学冶金过程","焊接物理冶金过程","焊接冷过程","在焊接过程中,可将熔焊焊接接头的形成归纳为( )",{"answer":91,"createTime":5,"id":92,"options":93,"question":95,"source":31,"type":80},[],123282021,[46,94,47,29],"HAZ","熔焊时,在焊接热源的作用下,焊缝周围的母材发生组织和性能转化的区域叫做( )",{"answer":97,"createTime":5,"id":98,"options":99,"question":104,"source":31,"type":80},[],123282028,[100,101,102,103],"固溶强化","细晶强化","弥散强化","相变强化","焊缝合金化的目的是保证焊缝金属的焊态强度和韧性,可以采用( )"]