[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fh61FStRrECWuFHRgYCVyvHNbE_JLp-qXqwZj9i8jJzU":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":28,"type":29},[],"2023-11-15 11:40:36",105956393,[8,9,10,11],"工艺能力","误差复映","误差传递","误差敏感",{"courseId":13,"courseImg":14,"courseName":15},"90ab81c065fb82249b8afa332a7c0040","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5bdfc46d1fa15dc458df14e254444dc8.jpg","机械制造技术基础","通常用( )系数表示某种加工方法和加工设备胜任零件所要求加工精度的程度",[18,30,39,48,57,66,69,78,86,92],{"answer":19,"createTime":20,"id":21,"options":22,"question":27,"source":28,"type":29},[],"2023-11-15 11:40:35",105956388,[23,24,25,26],"符合基推重合原则","符合基准统一原则","保证加工面的余量小而均匀","保证加工面的形状和位置精度","自为基准是以加工面本身为精基准,多用于精加工或光整加工工序,这是由于( )","v1",0,{"answer":31,"createTime":20,"id":32,"options":33,"question":38,"source":28,"type":29},[],105956389,[34,35,36,37],"基准重合","互为基准","自为基准","基准统一","车床主轴轴颈和锥孔的同轴度要求很高,因此常采用( )方法来保证",{"answer":40,"createTime":20,"id":41,"options":42,"question":47,"source":28,"type":29},[],105956390,[43,44,45,46],"工序","工位","走刀","工步","( )是工艺过程的基本单元,又是生产计划和成本核算的基本单元",{"answer":49,"createTime":20,"id":50,"options":51,"question":56,"source":28,"type":29},[],105956391,[52,53,54,55],"增大","减小","不变","无规律变化","正态分布曲线中σ值减小则工件的尺寸分散范围( )",{"answer":58,"createTime":5,"id":59,"options":60,"question":65,"source":28,"type":29},[],105956392,[61,62,63,64],"常值系统误差","变值系统误差","形位误差","随机误差","内应力引起的变形误差属于( )",{"answer":67,"createTime":5,"id":6,"options":68,"question":16,"source":28,"type":29},[],[8,9,10,11],{"answer":70,"createTime":5,"id":71,"options":72,"question":77,"source":28,"type":29},[],105956394,[73,74,75,76],"首端","中间","末端","两端","通常机床传动链误差用( )元件的转角误差来衡量",{"answer":79,"createTime":5,"id":80,"options":81,"question":85,"source":28,"type":29},[],105956395,[82,83,84],"前刀面","后刀面","前、后刀面","切削铸铁工件时,刀具的磨损部件主要发生在( )",{"answer":87,"createTime":5,"id":88,"options":89,"question":91,"source":28,"type":29},[],105956396,[90,36,34,35],"统一基准","采用( )加工,可以提高生产率和保证被加工表面间的相互位置精度",{"answer":93,"createTime":5,"id":94,"options":95,"question":100,"source":28,"type":29},[],105956397,[96,97,98,99],"高速钢","P类(相当于钨钛钴类)硬质合金","K类(相当于钨钴类)硬质合金","合金工具钢","下列刀具材料中,强度和韧性最好的材料是( )"]