[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fyjFOVrhANmp724KS1iLvbBgZt-2MULQh5sHrKdT5byo":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":28,"type":29},[],"2024-01-12 20:21:02",130775670,[8,9,10,11],"20DB和40DB都不按","20DB和40DB同时按下","20DB","40DB",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},168,"dfd68d8bd4fb74528567ed92c49a3779","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1cd399afaea7e56367fa46c875106e1f.jpg","电子技术基本技能实训","work_31420221","2023级复习题库","如果要将信号衰减100倍输出,要按下( )按键",[21,30,39,48,57,66,73,80,89,92],{"answer":22,"createTime":5,"id":23,"options":24,"question":27,"source":28,"type":29},[],130775651,[25,26],"负极、正极","正极、负极","用数字万用表测量二极管,数字式万用表表笔插在(ΩV)端子时,红表笔代表内电池的(),黑表白代表内电池的()","v1",0,{"answer":31,"createTime":5,"id":32,"options":33,"question":38,"source":28,"type":29},[],130775657,[34,35,36,37],"波形频率为500 μs","水平每格所占的时间即水平偏转因数为500μs\u002Fdiv","垂直每格所占的时间即垂直偏转因数为500μs\u002Fdiv","波形周期为500 μs","屏幕左上显示"M 500μs"意思是( )",{"answer":40,"createTime":5,"id":41,"options":42,"question":47,"source":28,"type":29},[],130775659,[43,44,45,46],"紫蓝黑棕棕","紫蓝黑红棕","紫绿黑黑棕","紫绿黑红棕","750Ω±1%的电阻色环表示是",{"answer":49,"createTime":5,"id":50,"options":51,"question":56,"source":28,"type":29},[],130775661,[52,53,54,55],"1","3","2","4","项目二简易信号放大器的制作设置了几个任务",{"answer":58,"createTime":5,"id":59,"options":60,"question":65,"source":28,"type":29},[],130775663,[61,62,63,64],"型号是R68","阻值是6.8Ω","阻值是0.68Ω","电阻68Ω","贴片电阻阻值是用3位数码表示,如果贴片电阻上标有R68,表示",{"answer":67,"createTime":5,"id":68,"options":69,"question":72,"source":28,"type":29},[],130775666,[70,71],"从路,主路","主路,从路","双路直流稳压电源有两路可调输出端,有主路和从路之分,一般Ⅰ路是(),Ⅱ路是()",{"answer":74,"createTime":5,"id":75,"options":76,"question":79,"source":28,"type":29},[],130775667,[77,78],"超量程","损坏","数字万用表在正常测量时,如果不显示数字,而是最高位显示"1"或者"OL"符号,万用表处于( )状态,这时要将量程打到高一些",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":28,"type":29},[],130775669,[84,85,86,87],"QFP(Quad Flat Package)","BGA(Ball Grid Array)","SOP(Small outline Package)","PLCC(Plastic Leadless Chip Carrier)","零件四边有脚,零件脚向零件底部弯曲封装的集成简称( )",{"answer":90,"createTime":5,"id":6,"options":91,"question":19,"source":28,"type":29},[],[8,9,10,11],{"answer":93,"createTime":5,"id":94,"options":95,"question":100,"source":28,"type":29},[],130775671,[96,97,98,99],"用来检测仪器和探头的好坏","显示的信号波形与校准频率幅度一样,说明示波器是好的","不显示波形,示波器一定坏了","波形一定是方波","对于示波器校准信号,错误的是( )"]