扩频通信概念。
参考答案:
CDMA传输系统中采用了扩频技术,即是将原始信号的带宽变换为比原始带宽宽的多的传输信号,以来达到提高通信系统的抗干扰目的。
写一写有关诚信的名言。
_____________________________________________
—_____?
—Yes, I like action movies. [ ]
A. What kind of movies do you like
B. Do you like what kind of movies
C. Do you like thrillers
D. Do you like action movies