[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fO03Zw-2L0DITzfcgaVDSIKSFHGG1VPNuq8wOnVKGXho":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":17,"related":18,"source":28,"type":102},[],"2023-06-12 01:17:36",58884199,[8,9],"正确","错误",{"count":11,"courseId":12,"courseImg":13,"courseName":14,"workId":15,"workName":16},18,"256c3ba9da38615dedd14a44be8c7ed5","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F67f9fd1984c0fe61d4fe4bfe81a47087.jpg","工业工程生产实习","work_28140552","机械加工工艺设计基础知识作业","落料工序和冲孔工序的区别是:用冲模沿着封闭轮廓线冲切,冲下部分是零件就是落料工序,冲下部分是废品就是冲孔工序",[19,30,38,47,55,64,72,81,88,97],{"answer":20,"createTime":21,"id":22,"options":23,"question":27,"source":28,"type":29},[],"2023-06-12 01:15:37",58875492,[24,25,26],"粗车、半精车、精车","粗车、半精车、研磨","粗车、半精车、粗磨、精磨","某轴尺寸为Φ74±0.013,该轴表面粗糙度为Ra0.8um,查下表1和图1,下面哪条加工路线加工该轴较好?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4af1d84e279a214d6a4e215e7edec28a.png\">\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F65aa002b5c2230703661f80dd3788035.png\">","v1",0,{"answer":31,"createTime":21,"id":32,"options":33,"question":37,"source":28,"type":29},[],58875493,[34,35,36],"选择平板工件大平面,孔O,底面A做为定位基准","选择平板工件大平面,孔O1,孔O2做为定位基准","选择平板工件大平面,底面A做为定位基准","如下图板型工件,最后工序为在其上钻O1,O2孔,要求O1,O2与A面平行.试设计保证设计尺寸a和b的定位方案.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F289645c05042a9c9efa5e841abfdfb91.png\">",{"answer":39,"createTime":21,"id":40,"options":41,"question":46,"source":28,"type":29},[],58875494,[42,43,44,45],"1个","2个","3个","4个","某冲压件如图所示,问需要几个单工序模才能加工出这种冲压件?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdab7412c6c1fbb4ac77d630bb67fecf2.png\">",{"answer":48,"createTime":21,"id":49,"options":50,"question":54,"source":28,"type":29},[],58875495,[51,52,53],"底面和孔定位,限制了工件5个自由度","底面和孔定位,限制了工件6个自由度","外圆面和孔定位,限制了工件5个自由度","下图为动力转向器壳体某道工序的工序图,仔细分析上面的定位符号,问:该工序用哪些表面定位,限制了工件几个自由度?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb85080ad9a7a9b2e7a79b2f49afa2e53.png\">",{"answer":56,"createTime":21,"id":57,"options":58,"question":63,"source":28,"type":29},[],58875496,[59,60,61,62],"单工序落料模","单工序冲孔模","多工序级进模","多工序复合模","下图为某企业一个冲压模具,该模具是:\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1c81c56c7493dd615f100fdbe14bf439.png\">",{"answer":65,"createTime":21,"id":66,"options":67,"question":71,"source":28,"type":29},[],58875497,[68,69,70],"对放置在上面的工件进行定位,起到定位作用","对放置在上面的工件进行支撑,起到支撑作用","把弯曲成型后的零件,顶出凹模","下图为有压料装置V形件弯曲模,其结构图中顶杆1的主要作用是:\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd34b861669bfa1d9815a8611023075d9.png\">",{"answer":73,"createTime":21,"id":74,"options":75,"question":80,"source":28,"type":29},[],58875498,[76,77,78,79],"先选择f,再选择v,最后选择ap","先选择ap,再选择f,最后选择v","先选择v,再选择f,最后选择ap","先选择ap,再选择v,最后选择f","切削用量三要素的选定顺序是",{"answer":82,"createTime":21,"id":83,"options":84,"question":87,"source":28,"type":29},[],58875499,[60,59,85,86],"冲孔、落料级进模","冲孔、落料复合模","下图模具是:\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7d60038f7416a5562e2aab8bbcb463c4.png\">",{"answer":89,"createTime":21,"id":90,"options":91,"question":96,"source":28,"type":29},[],58875500,[92,93,94,95],"IT5","IT6","IT7","IT8","某轴尺寸为Φ74±0.013,查下表1,该轴尺寸是几级精度?\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff8553ef8dc5de2895e74966cb812fcc0.png\">",{"answer":98,"createTime":21,"id":99,"options":100,"question":101,"source":28,"type":29},[],58875501,[60,59,85,86],"下图模具是:\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fed41140f924ad359e438993a35ae8ee9.png\">",3]