A.中性點(diǎn)不接地 B.中性點(diǎn)經(jīng)阻抗接地 C.中性點(diǎn)直接接地 D.中性點(diǎn)經(jīng)大電阻接地
A.1KV B.10KV C.380V D.220V
A.400V B.10KV C.35KV D.220V