[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fo3EQVt-pg8WY3FDWQJXrQsGIOwYJ31LRVjl4rVO_PHQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":16,"related":17,"source":27,"type":60},[],"2023-12-20 10:39:37",985897948,[8,9],"对","错",{"courseId":11,"courseImg":12,"courseName":13,"workId":14,"workName":15},"1000089808","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F601026df3ecb9b98f35f2181a595576b.jpg","电子技术基础","57048069","第一章单元测试","色环金属膜电阻中,第四环表示的物理参数是精度.( )",[18,29,38,48,57,61,66,75,80,85],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],985897939,[22,23,24,25],"83","91","100","1000","工作在放大区的某三极管,如果当Ib从12uA增大到22uA,Ic从1mA增大到2mA时,那么它的β约为( )","v2",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],985897941,[33,34,35,36],"发射结正偏,集电结正偏","发射结正偏,集电结反偏","发射结反偏,集电结反偏","发射结反偏,集电结正偏","三极管工作在饱和区,要求( )",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":47},[],985897944,[42,43,44,45],"整流作用","开关作用","脉冲电路","低频电路","特制的硅二极管的主要作用有( )",1,{"answer":49,"createTime":5,"id":50,"options":51,"question":56,"source":27,"type":47},[],985897946,[52,53,54,55],"光敏特性","温度特性","湿度特性","掺杂特性","半导体的三大特性主要有( )",{"answer":58,"createTime":5,"id":6,"options":59,"question":16,"source":27,"type":60},[],[8,9],3,{"answer":62,"createTime":5,"id":63,"options":64,"question":65,"source":27,"type":60},[],985897950,[8,9],"三极管的分类主要有:高频三级管和低频三级管、平面型和合金型三极管、NPN和PNP型三极管、大功率和小功率三极管. ( )",{"answer":67,"createTime":5,"id":68,"options":69,"question":74,"source":27,"type":28},[],985897952,[70,71,72,73],"铜","锗","铅","银","以下哪种物质为半导体( )",{"answer":76,"createTime":5,"id":77,"options":78,"question":79,"source":27,"type":60},[],985897963,[8,9],"二极管正向导通的条件是其正向电压值大于死区电压.( )",{"answer":81,"createTime":5,"id":82,"options":83,"question":84,"source":27,"type":60},[],985897965,[8,9],"焊接时,连完两焊点以后,为加快焊接速度,最好直接继续连接下一个焊点.( )",{"answer":86,"createTime":5,"id":87,"options":88,"question":89,"source":27,"type":60},[],985897966,[8,9],"数字万用表检测二极管极性时,将万用表转换开关转到二极管图形符号所指档位,用两表笔分别与二极管相接,读数;交换表笔,重复测量,其中表的示数为1的那次,黑表笔所接为二极管负极.( )"]