[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fuH9I2qxrLdpz0Hp0RiUlQ15s6w5oQVP5wno077qWCGY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2023-11-10 21:13:00",104954344,[8,9,10,11],"20Hz~20kHz","2Hz~2MHz","2Hz~2kHz","20kHz~20MHz",{"courseId":13,"courseImg":14,"courseName":15},"d3c3425386e7715b4bf4dd6a44e89c10","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa5b08ac23ab1959d1e24ba14e2051bd9.png","学考电子理论与专业技能","下列频率范围,最适合低频信号发生器的是",[18,29,38,47,56,65,68,77,86,95],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],104954335,[22,23,24,25],"放大-检波式","检波-放大式","外差式","数字式","下图所示框图为( )模拟电子电压表的设计方案.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F85dbb5338d1115ca30db45f22bedf948.png\">","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],104954338,[33,34,35,36],"信号调节器","A\u002FD转换器","逻辑控制电路","显示电路","在下图所示数字多用表组成框图中,将直流电压转换成数字量的电路是\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F871fe8da9d33df8ab4af0762770418c1.png\">",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],104954341,[42,43,44,45],"一、二条刻度线","三、四刻度线","一、三刻度线","二、四刻度线","在下图所示模拟交流毫伏表刻度盘上,从上向下有四条刻度线.其中:表示电压有效值的专用刻度线为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4e14af1c2dd48f588f317336d37a115f.png\">",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],104954342,[51,52,53,54],"低频信号发生器、高频信号发生器","正弦信号发生器、非正弦信号发生器","普通信号发生器、标准信号发生器","函数信号发生器、扫频信号发生器","信号发生器按其频率可分为",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":27,"type":28},[],104954343,[60,61,62,63],"2.3","2.25","2.24","2.2","按有效数字的运算规则,对式1.005+0.1+1.135+0.0051运算,结果正确的是",{"answer":66,"createTime":5,"id":6,"options":67,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":27,"type":28},[],104954345,[72,73,74,75],"-0.2A","+0.2A","-0.02","0.02","某电路电流是10A,用乙表测量读数为10.2A,此次测量的绝对误差为",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":27,"type":28},[],104954347,[81,82,83,84],"偶然误差越小,测量误差便越小","绝对误差越小,测量误差便越小","相对误差越小,测量误差便越小","系统误差越小,测量误差便越小","关于测量误差的表述,下列正确的是",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":27,"type":28},[],104954348,[90,91,92,93],"DC20V","AC20V","DC20A","AC20A","用数字多用表测量5V直流电压时,应选择( )挡位",{"answer":96,"createTime":5,"id":97,"options":98,"question":102,"source":27,"type":28},[],104954349,[72,99,100,101],"0.2A","-2%","2%","某电路电流是10A,用甲表测量读数为9.8A,此次测量的相对误差为"]