Sunday, September 11, 2022
“一切属于国际单位制的单位都是我国的法定单位”这句话()。...
Sunday, September 11, 2022
Sunday, September 11, 2022
Tuesday, September 13, 2022
Sunday, September 11, 2022
某线路导线电阻为2Ω,电抗为4Ω,终端接有功负荷为200kW,功...
Sunday, September 11, 2022
Tuesday, September 13, 2022
停电测试高压电压、电流互感器变比时,施加的电压不应低于被试电压互...
Sunday, September 11, 2022
Tuesday, April 16, 2024
两只额定电压为220V的白炽灯泡,一个是100W,一个是40W。...
Sunday, September 11, 2022
Sunday, September 11, 2022
国家电网公司是中央直属的国有独资企业,所有者是(),法律规定由国...
Sunday, September 11, 2022
Tuesday, July 4, 2023
进户点离地面高于2.7m,但为考虑安全起见必须加高的进户线应采取...
Tuesday, September 13, 2022
检查兆欧表时,我们可以根据以下方法来判断兆欧表的好坏()。...
Tuesday, September 13, 2022
运行中的V类电能表,其周期轮换,从装出第六年起,每年应进行分批抽...
Tuesday, September 13, 2022
一只0.5级电能表的检定证书上某一负载的误差数据为+0.30%,...
Tuesday, September 13, 2022
8.7/10kV橡塑绝缘电力电缆的直流耐压试验电压是()。A、10kVB、25kVC、37kVD、47kV...
Sunday, July 9, 2023
某电焊机的额定功率为10kW,铭牌暂载率为25%,则其设备计算容...
Sunday, September 11, 2022