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【单选题】
在对2DPSK信号进行差分相干解调时,得到的结果是原始信号的()A.
绝对码
B.
相对码
C.
格雷码
D.
HDB3码
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反馈参考答案：
举一反三
【简答题】When towns__________their old walls, the people did not usually build new ones.
【简答题】You are given many opportunities in life to choose to be a victim or a creator. When you choose to be a victim, the world is a cold and difficult place. “They” did things to you which caused all of yo...
【简答题】When I was a child, there was a fair (集市) every autumn in my town. Lots of people from other towns to sell and buy things. During the fair, my became the busiest person of the family. All of her relat...
【多选题】下面哪些算式运用了乘法分配律？ [ ]
A.
37×6+37×4=37×（6+4）
B.
9×a+13×a=（9+13）×a
C.
78×（5×6）=78×5×6
D.
35×（2+8） =35×2+35×8
【简答题】P78第1、4、7、11、13、15、16。
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