A.中性點(diǎn)直接接地 B.中性點(diǎn)經(jīng)電容接地 C.中性點(diǎn)經(jīng)電阻接地 D.中性點(diǎn)經(jīng)電感接地
A.30mB.25mC.20mD.15m
A.150% B.105% C.85% D.75%