[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f7SZt5d0AAXZKH1CaUsT9yAZ0Svv709iFjMe0SNSMZVk":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":26,"type":37},[],"2026-05-22 12:44:34",1118941500,[8,9,10,11],"在测量前确保内径千分尺已经正确校零","使用内径千分尺测量时避免阳光直射和温度剧烈变化的环境","每次测量后不进行清洁直接放入专用盒子中保存","定期将内径千分尺送至计量部门进行检修和校准",{"courseId":13,"workId":14,"workName":15},"1000106334","66989754","第二章单元测试","在使用内径千分尺进行测量时,下列哪一项措施不能有效减少测量误差",[18,28,38,49,54],{"answer":19,"createTime":20,"id":21,"options":22,"question":25,"source":26,"type":27},[],"2026-05-22 12:44:33",1118941471,[23,24],"对","错","位置度是指零件上某一特征的几何要素相对于基准要素的位置精度,是机械加工和产品设计中的重要概念","v2",3,{"answer":29,"createTime":5,"id":30,"options":31,"question":36,"source":26,"type":37},[],1118941472,[32,33,34,35],"允许零件在相对运动时拥有一定的自由度","能够吸收和减轻振动与冲击","孔的实际尺寸永远小于轴的实际尺寸","提升设备的运行平稳度和耐用性","间隙配合是指具有间隙(包括最小间隙等于零)的配合,此时孔的公差带在轴的公差带之上.下列哪项不是间隙配合的特点",0,{"answer":39,"createTime":5,"id":40,"options":41,"question":47,"source":26,"type":48},[],1118941474,[42,43,44,45,46],"间隙配合中孔的公差带始终位于轴的公差带之上,且最小间隙可以为零","过盈配合的平均过盈计算公式为 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd81e970d964904004cef939dbab1c3ab.png\">,其中 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe157ce544a86c1f54bb07051161d77cc.png\">","过渡配合可能同时出现最大间隙 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd59db2166b4cbee161ebee6d56aece23.png\"> 和最大过盈 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2a147b6ab012b320a7e60e8db85f12d4.png\">","配合公差 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F81b8e750b17e9617c74565286d615165.png\"> 在间隙配合中等于孔与轴尺寸公差之和,即 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0ce993e27692b4da6be678f831c63de1.png\">","当过渡配合的 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F63d0b247e467a17f4fe61299126e16a8.png\"> 计算结果为负时,表示该配合具有平均过盈","关于机械装配中的配合类型,以下哪些描述是正确的",1,{"answer":50,"createTime":5,"id":51,"options":52,"question":53,"source":26,"type":27},[],1118941497,[23,24],"内径百分表的工作原理中,活动测头的移动通过等臂直角杠杆传递至百分表时,测量杆、推杆和活动测头三者的移动量相同是由于杠杆传动系统的设计特性",{"answer":55,"createTime":5,"id":6,"options":56,"question":16,"source":26,"type":37},[],[8,9,10,11]]