[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fo1tvDVSWoReZ62nuToljdeumAk3YPejhrLFgIZEWpXY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":28,"type":29},[],"2023-09-17 18:31:25",96945839,[8,9,10,11],"打硬度","火花鉴别","成分检验","凭手摸",{"courseId":13,"courseImg":14,"courseName":15},"6ff62bf2880a7c52e0e324d092cc1088","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5aa1e010016a00d72d96151e16aafd59.png","工程训练C","车间里常见( ) 来判别成分不明材料",[18,30,40,49,58,67,76,85,88,97],{"answer":19,"createTime":20,"id":21,"options":22,"question":27,"source":28,"type":29},[],"2023-09-19 18:12:20",96933924,[23,24,25,26],"淬火与中温回火","淬火与低温回火","淬火与高温回火","调质","刃具要求高硬度,应该进行( )处理","v1",0,{"answer":31,"createTime":32,"id":33,"options":34,"question":39,"source":28,"type":29},[],"2023-09-16 14:36:10",96933926,[35,36,37,38],"硬质合金","退火、正火及调质钢","陶瓷","淬火钢","适合用淬火钢球压头的布氏硬度计测定硬度值的材料是()",{"answer":41,"createTime":5,"id":42,"options":43,"question":48,"source":28,"type":29},[],96933929,[44,45,46,47],"HRC","HBS或HBW","HBA","HB","布氏硬度值用()表示",{"answer":50,"createTime":51,"id":52,"options":53,"question":57,"source":28,"type":29},[],"2023-09-19 18:12:19",96933932,[26,54,55,56],"高温回火","中温回火","低温回火","弹性零件在淬火后应进行()",{"answer":59,"createTime":32,"id":60,"options":61,"question":66,"source":28,"type":29},[],96933934,[62,63,64,65],"改变组织与力学性能","改变前二者","改变零件的形状与尺寸","其他","热处理的目的是()",{"answer":68,"createTime":20,"id":69,"options":70,"question":75,"source":28,"type":29},[],96945828,[71,72,73,74],"淬火","退火","回火","正火","渗碳属于()种热处理方法",{"answer":77,"createTime":78,"id":79,"options":80,"question":84,"source":28,"type":29},[],"2023-09-16 14:55:10",96945836,[81,82,83],"回火温度越高,钢的强度、硬度提高,而塑性和韧性也提高","回火温度越高,钢的强度、硬度下降,而塑性和韧性提高","回火温度越高,钢的强度、韧性提高,硬度和塑性下降","淬火钢在高温回火时,回火温度与力学性能的关系是()",{"answer":86,"createTime":5,"id":6,"options":87,"question":16,"source":28,"type":29},[],[8,9,10,11],{"answer":89,"createTime":90,"id":91,"options":92,"question":96,"source":28,"type":29},[],"2023-09-17 12:49:13",96945841,[93,94,38,95],"调质钢","铜合金","铝合金","最适合用HRC来表示其硬度的材料是( )",{"answer":98,"createTime":99,"id":100,"options":101,"question":105,"source":28,"type":29},[],"2023-09-16 14:55:11",96945843,[102,103,104],"当淬火后硬度不足时才对","不对","对","退火的目的是进一步提高淬火钢的硬度,对否"]