A.0.318 B.0.577 C.0.632 D.0.707
A.小于20% B.20%~40% C.40~60% D.60~100%
A.額定磁場(chǎng)電壓 B.次暫態(tài)電抗 C.轉(zhuǎn)動(dòng)慣量 D.正序電抗