【单选题】No sooner _____ the news than they rushed out into the street.
【简答题】When Joseph and Mary arrived there, the inn had no room and so they were offered ________ where _______ was soon born, with angels proclaiming this news to shepherds who then disseminated the message ...
【单选题】电动汽车都采用的冷却形式区别在于冷却系统中有没有
【单选题】已知4点序列x(n)=cos(πn),n=0,1,2,3,该序列的4点DFT为X(k),则X(0)=( )
【单选题】离散时间序列 x ( n )=cos(3πn/7-π/8) 的周期是 ( )
【单选题】(Paragraph 2) The whole nation was shocked by the news the next day, and psychologists had no answers to explain why these people didn’t help.
A.
Only people in New York heard about the murder.
B.
News about the murder traveled quickly.
C.
The murder was not shocking to psychologists.
【判断题】类地行星包括水星、金星、地球和火星。()
【单选题】序列x(n)=cos(3 π n/8)的周期是( )。