A.高頻和低頻電纜 B.高頻、低頻和高低頻綜合電 C.低頻和高低頻電纜 D.綜合電纜
A.二 B.三 D.四 C.五
A.對(duì)稱電纜和一般電纜 B.不對(duì)稱電纜和一般電纜 C.對(duì)稱電纜和不對(duì)稱電纜 D.塑料電纜和對(duì)稱電纜