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【单选题】
( )能力是国家竞争力的核心A.
文化创新
B.
科技创新
C.
理论创新
D.
制度创新
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反馈参考答案：
举一反三
【简答题】In the DSSS, the spectrum of the transmitted signal is much wider than the spectrum associated with the （ ） rate
【单选题】What is the difference between the transmitted power and the sensitivity of the receiver?（）
A.
OSNR
B.
dispersion
C.
attenuation
D.
power budget
E.
amplifier spacing
F.
four wave mixing
【判断题】If the bandwidth of transmitted signal is larger than the channel coherent bandwidth, part of the transmitted signal is truncated, which means nonlinearity is present and the signal could be severelyi...
A.
正确
B.
错误
【简答题】The main function of the receiver is to extract the input message signal from the degraded version of the transmitted signal coming from the channel.
【简答题】的颁布 是我国学前教育发展的一个重要里程碑,同时也标志着我国幼儿园语言教育进入了一个新的阶段。
【简答题】Translate the following sentences into Chinese. The main function of the receiver is to extract the input message signal from the degraded version of the transmitted signal coming from the channel.
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