A.15mm B.25mm C.30mm D.40mm
A.每個裝有電器設(shè)備的硐室 B.每個(套)單獨(dú)裝設(shè)的高壓電氣設(shè)備 C.每個低壓配電點(diǎn) D.每個排水的水坑
A.10~1012 B.10-4~10-6 C.10-2~1 D.10-4~10-8