[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fBjUXpYI7Gvs9_XRd6PfPLFyfn4-WR1OHxrXWmIQDxhs":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":25,"type":36},[],"2026-05-22 12:42:08",1118941494,[8,9,10,11],"确保零件在旋转或装配过程中保持精确对齐","提高零件的表面光洁度","减少零件的重量","增加零件的颜色均匀性",{"courseId":13,"workId":14,"workName":15},"1000106334","66989756","第一章单元测试","同轴度检测对机械零件的主要作用是什么",[18,27,37,40,51],{"answer":19,"createTime":5,"id":20,"options":21,"question":24,"source":25,"type":26},[],1118941490,[22,23],"对","错","对称度是限制被测线、面偏离基准直线、平面的一项指标,其公差带是距离为公差值t的两平行平面之间的区域","v2",3,{"answer":28,"createTime":5,"id":29,"options":30,"question":35,"source":25,"type":36},[],1118941492,[31,32,33,34],"对称度误差值为 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F826031d8a39854f9e44359fbec0dc026.png\">","对称度误差值为 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd0aed1e20a80659231107662b3223f1a.png\">","对称度误差值为 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25795f03d1a92cc9bff1b80973c25c50.png\">","对称度误差值为 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbad9b73e0d439d44a364a685cd116548.png\">","在进行对称度检测时,若使用高度千分尺测量被测表面至平板的距离L1和翻转零件180度后的距离L2,对称度误差值的计算方法是什么",0,{"answer":38,"createTime":5,"id":6,"options":39,"question":16,"source":25,"type":36},[],[8,9,10,11],{"answer":41,"createTime":5,"id":42,"options":43,"question":49,"source":25,"type":50},[],1118941495,[44,45,46,47,48],"测量前应检查两测砧是否密合,微分管与固定套管的零刻线是否对齐,必要时进行校准","测量时应握住隔热板,使千分尺和被测件温度相同或相近","读数时可以取下千分尺,但需先松开两测砧以防止磨损","使用后应立即擦拭干净并上油,放入专用盒中存放于干燥处","可用砂布或普通磨料擦拭测微螺杆上的污锈","关于外径千分尺的使用与维护,下列哪些做法是正确的",1,{"answer":52,"createTime":5,"id":53,"options":54,"question":55,"source":25,"type":26},[],1118941499,[22,23],"调查表、分层法和排列图在质量管理中可以独立使用,不需要相互结合就能解决所有质量问题"]