无论是相关器形式还是匹配滤波器形式的最佳接收机结构,它们的比较器都是在( )才做出最后判决的。
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设一个2PSK接收信号的输入信噪比Eb/n0=10dB,码元持续时间Ts,试比较最佳接收机和普通接收机的误码率相差多少,并设后者的带通滤波器带宽为6/Ts(Hz)。
According to a new study from Cornell University’s Food and Brand Lab, small non-food rewards stimulate the reward centers in brain.以上句子中主干部分的主语是什么?
A. small non-food rewards
B. a new study from Cornell University’s Food and Brand Lab
C. stimulate
D. the reward centers in brain
He theorizes that it is the emotional component of these intangible prizes that make them effective.关于上面的句子,以下判断正确的是:
A. 第一个that引导的是一个定语从句
B. 第二个that引导的是一个宾语从句
C. 句子的主干是He theorizes that...
D. 句中的theorizes是一个名词
The factthatparticipants were willing to substitute part of a food item for the mere prospect of a relatively small monetary award isinteresting.以上由that引导的同位语从句中的主语是什么?
A. the fact
B. participants
C. a relatively small monetary award
D. a food item