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【判断题】
2DPSK相干解调中不存在相位模糊现象。A.
正确
B.
错误
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举一反三
【简答题】Co-operation (合作)is always needed when you make a project that the teacher gives you. First, discuss all you would like to do with your classmates. Choose one of the members to write down what you’re ...
【单选题】The circuit is shown in the figure, the value of the resistor RL is variable. The maximum power that the load RL can get should be equal to ________Ω. Choose A,B,C or D. We can use Thevenin theorem t...
A.
5W
B.
10W
C.
20W
D.
40W
【单选题】Do you think the presidential election between Obama and Romney is worthy ?
A.
discussing
B.
to be discussed
C.
to discuss
D.
being discussed
【简答题】西方经济学的研究对象是什么?经济学中的基本选择包括什么?
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