ADSL技术中,信噪比值越小连接性能越好

1、正确
2、错误
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错误

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PartVWriting

Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopic:KeepingFit.Youshouldwriteatleast100—120wordsandyoushouldbaseyourcompositionontheoutline(giveninChinese)below:

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