A . 电压
B . 电阻
C . 电流
D . 电器
[单选题]When voltage and current developed in an AC circuit reach their peak values at the same time, the power factor is _____.A.laggingB.leadingC.maximumD.minimum
[名词解释] 标称电压(nominal voltage)
[名词解释] 故障电压(fault voltage)
[名词解释] 英译汉:voltage
[名词解释] 额定电压(rated voltage)
[单选题]机床报警LaserH-Voltage not ready是()A . 机床没回参考点B . 激光器没上高压C . 没开切割气体空气或氧气
[单选题]The output voltage of a 440 volt, 60 hertz, AC generator is controlled by theA.prime mover speedB.exciter output voltageC.load on the alternatorD.number of poles
[名词解释] 接触电压限值(touch voltage limit)
[名词解释] voltage-gated channels (电位-门控通道)
[名词解释] 特低电压(extra-low-voltage或ELV)