[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fjcsdZiPmjttmeIUScQK940O5IS9lVtg2gADVR1Y62P4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-11-14 21:19:06",234097692,[8,9,10,11],"火花鉴别","凭手摸","打硬度","成分检验",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},18,"6ff62bf2880a7c52e0e324d092cc1088","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5aa1e010016a00d72d96151e16aafd59.png","工程训练C","work_47620985","7-1 热处理章节作业","车间里常见( ) 来判别成分不明材料",[21,32,42,50,58,66,75,78,86,91],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],234097686,[25,26,27,28],"退火、正火及调质钢","陶瓷","淬火钢","硬质合金","适合用淬火钢球压头的布氏硬度计测定硬度值的材料是()","v1",0,{"answer":33,"createTime":34,"id":35,"options":36,"question":41,"source":30,"type":31},[],"2025-11-21 16:43:35",234097687,[37,38,39,40],"可控气氛热处理","井式电阻炉","都可以","高频感应加热设备","对于氧化脱碳有严格要求的零件,应选择以下哪种加热炉()",{"answer":43,"createTime":5,"id":44,"options":45,"question":49,"source":30,"type":31},[],234097688,[46,47,48],"适宜","不适宜","低碳钢适宜,高碳钢不适宜","退火后的工件是否适宜进行洛氏硬度试验",{"answer":51,"createTime":5,"id":52,"options":53,"question":57,"source":30,"type":31},[],234097689,[54,55,56],"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","回火温度越高,钢的强度、硬度提高,而塑性和韧性也提高","淬火钢在高温回火时,回火温度与力学性能的关系是()",{"answer":59,"createTime":34,"id":60,"options":61,"question":65,"source":30,"type":31},[],234097690,[62,63,64],"不对","当淬火后硬度不足时才对","对","退火的目的是进一步提高淬火钢的硬度,对否",{"answer":67,"createTime":5,"id":68,"options":69,"question":74,"source":30,"type":31},[],234097691,[70,71,72,73],"淬火与高温回火","淬火与中温回火","调质","淬火与低温回火","刃具要求高硬度,应该进行( )处理",{"answer":76,"createTime":5,"id":6,"options":77,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":79,"createTime":5,"id":80,"options":81,"question":84,"source":30,"type":85},[],234097693,[82,83],"正确","错误","用来制造轴、齿轮、连杆及曲轴等机械零件,一般选用耐磨钢",3,{"answer":87,"createTime":5,"id":88,"options":89,"question":90,"source":30,"type":85},[],234097694,[82,83],"由于正火较退火冷却速度快,获得组织较细,因此正火的强度和硬度比退火的高",{"answer":92,"createTime":5,"id":93,"options":94,"question":95,"source":30,"type":85},[],234097695,[82,83],"钳工用的锉刀硬度很高,它是通过淬火和低温回火处理得到高硬度的"]