A.3 B.4 C.5 D.6
A.防爆充油型電氣設(shè)備 B.礦用一般型電氣設(shè)備 C.本安型電氣設(shè)備 D.隔爆型電氣設(shè)備
A.1.5m,100mm B.1m,500mm C.1.2m,250mm D.1.1m,250mm