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【多选题】
以下关于单边带调制(SSB)的说法正确的是A.
比DSB信号节省一半的带宽
B.
比AM信号节省一半的带宽
C.
可以采用非同步的解调方式
D.
与AM和DSB调制相比，提高了系统的带宽利用率
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举一反三
【单选题】当前已打开Word文档l,苦想再打开Word文档2，则_____
A.
必须先关闭文档l，才能打开文档2
B.
打开文档2时，自动关闭文档1
C.
可直接打开文档2，不必关闭文档l
D.
文档2的内容自动加入文档1中
【简答题】企业名称由哪几部分构成？
【单选题】Which of the following statements about the impact of technological developments is not true?
A.
Technology developments have supported corporate delayering
B.
Technology developments tend to adversely affect employee relations
C.
Technology developments creates risk for long-range product/market planning
D.
Technology developments offer significant advantages for corporate communications
【多选题】Which of the following statements about the impact of technological developments are true?
A.
Technology developments have supported corporate delayering
B.
Technology developments tend to adversely affect employee relations
C.
Technology developments creates risk for long-range product/market planning
D.
Technology developments offer significant advantages for corporate communications
【多选题】The professor briefly describes developments in home building. Put the developments in the order in which they occurred. Drag each answer to the space where it belongs. [*]
A.
Round structure built of stone
B.
Building with multiple living units
C.
Round hut made of branches and leaves
D.
Box-shaped structure with four walls
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