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【单选题】
下列说法正确的是 。A.
一个逻辑函数全部最小项之和恒等于 0
B.
一个逻辑函数全部最大项之和恒等于 0
C.
一个逻辑函数全部最小项之积恒等于 1
D.
一个逻辑函数全部最大项之积恒等于 0
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【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
A.
正确
B.
错误
【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...