[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fDzOYCOFkUWxC8qrv-ETnal7BVkxW8FXg6_PqpghZKl0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2024-09-24 18:02:04",160098439,[8,9,10,11],"基板","粘合剂","铜箔","增强材料",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},16,"aa260ca24de5ecb52744b5d53a2902ef","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8f6d1861c2d7225ca42808692d75026e.jpg","电子产品生产工艺技术","8a6c3eec2b634e6ca28ba16fe60e7d69","单元测验2(电子产品结构设计).xls","印制电路板上的导电图形是由覆铜板的( )制作而成",[21,32,41,50,59,62,71,80,90,99],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],160098435,[25,26,27,28],"固有可靠性","使用可靠性","环境适应性","D","方案设计决定的产品可靠性属于( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],160098436,[36,37,38,39],"第一等级","第二等级","第三等级","第四等级","在有关的IPC标准中建立的三个通用的产品等级中,要求最严格的高可靠性电子产品属于( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],160098437,[45,46,47,48],"通孔","埋孔","盲孔","定位孔","从PCB一面贯通至另一面的导电孔是( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],160098438,[54,55,56,57],"抗剥离强度","翘曲度","抗弯强度","耐浸焊性","覆铜板受热后所能承受的铜箔剥离能力,是覆铜板的( )",{"answer":60,"createTime":5,"id":6,"options":61,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],160098440,[66,67,68,69],"1","2","3","4","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc507e0b8cdf677f970fb24a0e32dba7b.jpg\">图示印制电路板属于( )层板",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],160098441,[75,76,77,78],"柔性板","刚性板","刚挠性板","多层板","FPC是指( )",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":89},[],160098442,[84,85,86,87],"产品体积和重量","产品操作性","产品可生产性","产品维修性","电子产品的使用主要考虑以下哪些方面的要求( )",1,{"answer":91,"createTime":5,"id":92,"options":93,"question":98,"source":30,"type":89},[],160098443,[94,95,96,97],"空气湿度","振动冲击","工作电流","电磁干扰","以下属于可靠性规定条件要素的是( )",{"answer":100,"createTime":5,"id":101,"options":102,"question":107,"source":30,"type":89},[],160098444,[103,104,105,106],"元器件或者材料机械破坏:疲劳损坏,强度破坏","结构变形或者松动","电气参数变化","电路接触不良","振动与冲击对电子产品的危害有"]