A.絕緣B.過(guò)渡設(shè)備C.抱箍D.捆扎線
A.性能B.數(shù)量C.方法D.工具
A.0.9Un~1.1UnB.0.8Un~1.15UnC.0.6Un~1.15UnD.0.0Un~1.15Un