A.IP55B.IP35C.IP67D.IP78
A.電流發(fā)大作用B.單向?qū)щ娦?br/>C.通交流隔直流D.開關(guān)作用
A.定子B.定子繞組C.轉(zhuǎn)子D.轉(zhuǎn)子繞組