中興認(rèn)證考試(精編)國(guó)內(nèi)傳輸單項(xiàng)選擇題每日一練(2019.01.04)

A.機(jī)架號(hào)設(shè)置從1開(kāi)始
B.子架號(hào)設(shè)置從0開(kāi)始
C.撥碼開(kāi)關(guān)位于子架的接口區(qū)
D.撥碼開(kāi)關(guān)是一個(gè)四位開(kāi)關(guān)

A.192.1THZ
B.192.3THZ
C.192.1GHZ
D.353.1GHZ

A.OPA
B.DRA
C.OSC
D.OPM

A.-21dbm
B.-28dbm
C.-24dbm

A.20db
B.18db
C.22db