Thursday, February 8, 2024
Thursday, September 15, 2022
问题:由某电流表测得的电流示值为0.83mA,查得电流表检定证书得知该...
Monday, September 12, 2022
问题:参数固态继电器可以()和各种敏感元件构成自动控制系统。...
Thursday, September 15, 2022
Wednesday, September 20, 2023
问题:孔板入口的边缘出现一定程度的磨损后,测量结果比实际值()。A、高B、没有影响C、低...
Saturday, February 11, 2023
问题:三相有功功率测量有三表法和两表法两种,请指出分别适应于那两种电路...
Thursday, September 15, 2022
问题:TTL电路参数规定,输入从3V下降到(),电路才翻转,这个电压叫...
Monday, September 12, 2022
问题:当示波器的扫描速度为20s/cm时,荧光屏上正好完整显示一个的正...
Thursday, September 15, 2022
Saturday, September 30, 2023
Thursday, September 15, 2022
Saturday, September 30, 2023
问题:示波器的信号输入有交流和直流两种方式,它们的区别是:()。...
Thursday, September 15, 2022
问题:锯齿波是指电压(或电流)随时间成()的波长。A、线性变化B、指数变化C、函数变化...
Monday, December 25, 2023
问题:通径相同的单座阀a、双座阀b和偏芯旋转阀c的流通能力()...
Thursday, September 15, 2022
Thursday, September 15, 2022
Monday, December 25, 2023
Sunday, September 11, 2022
问题:简要说明TMS1000系列,Z80微处理器的用途和特点。...
Thursday, September 15, 2022
问题:掌握输入输出电阻的概念是为了自放大器中获得()。...
Thursday, September 15, 2022