A.50mm*5mm B.50mm*4mm C.40mm*5mm D.40mm*4mm
A.1-2 B.2-3 C.3-4 D.4-5
A.電源設(shè)備安裝 B.機房環(huán)境 C.消防安全設(shè)施 D.備品備料的移交 E.接地電阻