A.監(jiān)視電網(wǎng)的絕緣 B.監(jiān)視負(fù)載的絕緣 C.監(jiān)視發(fā)電機(jī)絕緣 D.監(jiān)視岸電的絕緣
A.必須放置過載 B.單獨(dú)設(shè)置過載 C.不設(shè)置過載 D.不設(shè)置短路
A.必須/過載 B.一般不單獨(dú)/過載 C.單獨(dú)/短路 D.單獨(dú)/過載