A.0.02~0.04 B.0.1 C.0.05~0.06 D.0.1~0.2
A.銅制連條 B.鉛制連條 C.鐵質(zhì)連條 D.錫制連條
A.聚氯乙烯 B.絕緣橡膠 C.聚丙烯透明塑料 D.絕緣樹脂