关 于 ADSL 接 入 的 描 述 中 , 正 确 的 是

A、数据传输需要进行调制解调
B、传输介质采用同轴电缆
C、只支持TCP/IP网络
D、上行速率通常大于下行速率
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正确答案:

A

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(D)willeventuallystopthetumorfromspreadingout.

Questions10-13

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