A.0.1s B.0.5s C.0.7s D.10s
A.躲過(guò)電動(dòng)機(jī)起動(dòng)電流 B.等于額定電流 C.最大短路電流 D.小于額定電流
A.0.5MΩ B.5MΩ C.10MΩ D.20MΩ