【判断题】The advantage of differential keying (e.g., pi/4-DQPSK) is that it is not important to know the absolute carrier phase. Only the change in carrier phase from one symbol to the next is important
【简答题】A.Because it is not important for a car. B.Because the result is not good to be attracted by that. C.Because it is often cheating to disguise the inner flaws. D.Because that is a typically female reas...
【简答题】After surviving the Cultural Revolution, they firmly believed there's only one sure way to happiness: ______________. It is not important if I like the job or not. My dream would never come true. I wa...