A.傳輸?shù)墓β蕦挕⑼ㄐ湃萘看?br /> B.傳輸損耗大 C.不受電磁干擾 D.質(zhì)量輕
A.低密度結構光纜 B.骨架式結構光纜 C.復合式結構光纜 D.無金屬光纜
A.-40℃~+40℃ B.-5℃~+60℃ C.-40℃~+50℃ D.-5℃~+50℃