A.1 B.2 C.3 D.4
A.直流1500V轉(zhuǎn)換成380V交流 B.交流380V轉(zhuǎn)換成110V直流 C.交流380V轉(zhuǎn)換成220V交流 D.直流110V轉(zhuǎn)換成48V直流
