[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fkXn34BIBxoHwVofcNqVDwHTZoV1bE_Y5EVKVieudruY":3},{"id":4,"source":5,"question":6,"options":7,"answer":12,"related":13,"type":23,"origin":105,"createTime":25},305499270,"v1","材料的屈服强度与( )的比值称为屈强比.屈强比小,对所有的压成形工艺都有利",[8,9,10,11],"抗拉强度","延伸率","屈强比","硬化指数",[],[14,26,36,46,55,64,73,81,85,95],{"id":15,"source":5,"question":16,"options":17,"answer":21,"related":22,"type":23,"origin":24,"createTime":25},305499263,"冲压件的尺寸稳定,互换性好,是因为其尺寸公差由( )来保证",[18,19,20],"模具","冲压件","压力机",[],[],0,null,"2026-01-07T10:12:38+08:00",{"id":27,"source":5,"question":28,"options":29,"answer":34,"related":35,"type":23,"origin":24,"createTime":25},305499264,"落料工件的尺寸应该测量断面的哪个区域",[30,31,32,33],"圆角带","光亮带","断裂带","毛刺区",[],[],{"id":37,"source":5,"question":38,"options":39,"answer":44,"related":45,"type":23,"origin":24,"createTime":25},305499265,"冲裁件光亮带的产生是由于()",[40,41,42,43],"冲裁过程板料发生拉伸破坏造成的","冲裁过程板料发生拉伸与弯曲破坏造成的","冲裁过程板料发生剪切破坏造成的","冲裁过程板料发生弯曲破坏造成的",[],[],{"id":47,"source":5,"question":48,"options":49,"answer":53,"related":54,"type":23,"origin":24,"createTime":25},305499266,"冲压生产常用的材料有( )、有色金属、非金属材料",[50,51,52],"复合材料","黑色金属","铝板",[],[],{"id":56,"source":5,"question":57,"options":58,"answer":62,"related":63,"type":23,"origin":24,"createTime":25},305499267,"型材滚弯常见质量故障有断面畸变、( )、裂纹、表面质量差等",[59,60,61],"横向扭曲","纵向扭曲","无扭曲现象",[],[],{"id":65,"source":5,"question":66,"options":67,"answer":71,"related":72,"type":23,"origin":24,"createTime":25},305499268,"管子弯曲过程常见的故障有管壁外侧裂纹、管壁内侧失稳起皱、截面畸变成( )",[68,69,70],"椭圆形","圆形","方型",[],[],{"id":74,"source":5,"question":75,"options":76,"answer":79,"related":80,"type":23,"origin":24,"createTime":25},305499269,"样板的制作依据是()",[77,78],"模线","零件机械加工图纸",[],[],{"id":4,"source":5,"question":6,"options":82,"answer":83,"related":84,"type":23,"origin":24,"createTime":25},[8,9,10,11],[],[],{"id":86,"source":5,"question":87,"options":88,"answer":93,"related":94,"type":23,"origin":24,"createTime":25},305499271,"在金属材料拉伸实验中,材料的变形过程按顺序为:1.弹性变形阶段2.屈服阶段3.塑性变形阶段4.破坏断裂",[89,90,91,92],"1234","4321","2134","2143",[],[],{"id":96,"source":5,"question":97,"options":98,"answer":103,"related":104,"type":23,"origin":24,"createTime":25},305499272,"有关材料冷加工,下面说法正确的是()",[99,100,101,102],"冷加工不一定会产生内应力","冷加工后,金属材料的强度增加","冷加工后,金属材料的塑性增加","冷加工是指在室温下加工的钣金成形方法",[],[],{"courseName":106,"courseImg":107,"workName":108,"workId":108,"count":23,"courseId":109},"默认课程","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","","53e1d2ef4961cca8eea3e23969ad2cb9"]