A.銅芯絕緣導(dǎo)線(xiàn) B.銅芯電纜 C.鋁芯電纜 D.鋁芯絕緣導(dǎo)線(xiàn)
A.110V/220V B.220V/300V C.380V/500V D.220V/380V
A.300/500V B.380/500V C.250/500V D.220/300V