A.80% B.100% C.120% D.150%
A.中性點(diǎn)接地 B.中性點(diǎn)不接地 C.中性點(diǎn)經(jīng)電阻接地
A.電壓互感器 B.單相 C.樹(shù)脂澆注絕緣