A.1 B.2 C.3 D.4
A.整流器輸出故障,負(fù)載直接由市電供電 B.逆變器輸出故障,負(fù)載直接由市電供電 C.逆變器輸出故障,負(fù)載由蓄電池供電 D.逆變器輸出故障,負(fù)載直接由市電供電
A.380V B.220V C.1V D.0V