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【单选题】
在会议电话中,为了实现用户A能同时听到用户B、用户C的声音,要求交换设备做到A.
用户B与用户C的PCM语音先变换为线性可加的数据,再相加,再逆变换后送给用户A
B.
交换网络支持一对多的交换,将用户A的语音交换给用户B和用户C
C.
交换网络支持多对一的交换,将用户B、用户C的语音直接交换给用户A
D.
用户B与用户C的PCM语音直接相加后送给用户A
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【简答题】A．He would lose his life. B．He would lose an ear. C．He would lose all his salt. D．He would lose an eye.
【简答题】A．He would lose his life. B．He would lose an ear. C．He would lose all his salt. D．He would be heavily fined.
【单选题】如果希望在Word 2010窗口中显示标尺,应当在“视图”选项卡上_____。
A.
单击“标尺”按钮
B.
选中“标尺”复选框
C.
选中“文档结构图”复选框
D.
单击“页面视图”按钮
【单选题】He said _______, but actually he didn’t keep his promise. That’s to say, he didn’t show up.
A.
he would come the next day
B.
he had come tomorrow
C.
he came the next day
D.
he will come tomorrow
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