A.破損故障 B.泄露故障 C.雷擊故障 D.水浸故障
A.ATM B.OTDM C.OFDM D.DWDM
A.光時(shí)分復(fù)用(OTDM) B.光頻復(fù)用(OFDM) C.光碼分復(fù)用(OCDM) D.密集波分復(fù)用(DWDM)