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双工私密功能在通话时将长时间同时占用四个信道,占用资源严重,故一般不予开通。( )
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发布时间: 2023-11-19 12:16
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双工私密功能在通话时将长时间同时占用四个信道,占用资源严重,故一般不予开通。( )
A.对
B.错
正确答案是B
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