Thursday, September 15, 2022
问题:测量变压器的介损,可以反映出变压器绕组是否有断股,接头接触不良等缺陷。()...
Monday, March 18, 2024
Thursday, September 15, 2022
Monday, September 12, 2022
问题:明敷接地线时,接地线支持件间的距离在水平直线部分宜为()m。A、0.5-1.5mB、1.5-3.0C、0.3-0.5...
Tuesday, September 19, 2023
Monday, September 12, 2022
Thursday, September 15, 2022
问题:应采用安全电压的场所,不得用漏电保护器代替,如使用安全电压确有困...
Thursday, September 15, 2022
问题:按照交流电动机参数分类,交流电动机凋速方法有()....
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:使用螺旋测微器的注意事项是什么?棘轮如何使用?螺旋测微器用毕还回...
Sunday, September 11, 2022
问题:在安装变压器时,应沿瓦斯继电器方向有()升高坡度。...
Thursday, September 15, 2022
问题:甲、乙两电炉额定电压都是220V,但甲的功率是1000W,乙的功率是2000W,其中乙电炉的电阻较大。()...
Wednesday, February 15, 2023
问题:在充油电气设备上取油样,应在天气干燥时进行。()...
Thursday, September 15, 2022
Tuesday, September 19, 2023
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:电路一般有()构成.A、电源B、负载C、导线D、控制设备...
Saturday, March 16, 2024