中興交換專業(yè)考試中興交換專業(yè)知識(shí)單項(xiàng)選擇題每日一練(2019.01.26)

A.8K
B.32K
C.64K
D.128K
E.256K
F.512K

A.一條
B.二條
C.四條
D.八條

A.DTMF/MFC/CID+DTMF/MFC/CID
B.TONE/DTMF/MFC/CID +DTMF/MFC/CID
C.TONE/DTMF/MFC/CID +DTMF/MFC/CID/TONE
D.TONE/DTMF/MFC/CID/CONF+TONE/DTMF/MFC/CID /CONF

A.4個(gè)
B.6個(gè)
C.8個(gè)
D.數(shù)目不定

A.緊急告警或重要技術(shù)信號(hào)告警
B.非緊急告警或一般技術(shù)信號(hào)告警
C.電路技術(shù)信號(hào)、提示性技術(shù)信號(hào)告警、通知消息