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【判断题】
在移动通信中，由于信号传播的条件恶劣和快衰落的影响，接收信号的幅度会发生急剧的变化。因此，在移动通信中必须采用一些抗干扰性能强、误码性能好、频谱利用率高的调制技术，尽可能地提高单位频带内传输数据的比特速率以适用于移动通信的要求。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】We feel it ______ that the patterns required by you are out of stock for the time being.
A.
regretful
B.
regretted
C.
regrettable
D.
regretting
【单选题】十一黄金周期间,许多商家请来大腕明星帮助其进行产品宣传,往往购买者如潮商家这么做是利用了消费者的( )。
A.
求同心里。
B.
求异心理。
C.
求名心理。
D.
求实心理
【简答题】阅读表达（10分） Everyone needs friends. We all like to feel close to someone. It is nice to have a friend to talk, laugh, and to do things with. (1) Of course , sometimes ________need to stay by ________. W...
【简答题】l 1.What can you make? A. It’s soft. l 2.What can Linda hear? B. No, I can’t. l 3.What`s this? C. Yes, please. l 4.Can you see a snake? D. T...
【简答题】根据首字母完成单词 1. Please make as few m___ as you can. 2. We feel c___ when we heard about that. How confusing it is! 3. The poet usually express his feeling s in an u___way. 4. Ring me up as s___ as you fi...
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