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【单选题】
ISDN中的PRI线,D通道的一般作用是( )A.
传送语音
B.
传送信令
C.
收发传真
D.
用户数据通道
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【判断题】The point of going somewhere like the Napo River in Ecuador is to see the most spectacular thing.
A.
正确
B.
错误
【单选题】—ou___________ stop me. —Even if you __________it, I won't allow you to swim across the river.
A.
mustn't; dare not do
B.
may ; dare not do
C.
can; dare to do
D.
needn't; dare do
【简答题】健美操的概念?
【单选题】A notice was placed by the river bank warning people to ___________ the thin ice.
A.
keep off
B.
keep out
C.
keep away
D.
keep on
【简答题】健美操的概念
【简答题】健美操的概念 ?
【简答题】Built in 1794 for the 5th Duke of Bedford, this hotel in the heart of Bedford overlooks the River Ouse, which winds through the beautiful Bedfordshire countryside. We offer a flexible approach to conf...
【简答题】分时技术是把主机CPU的响应时间分成若干大小相等或不等的
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