【判断题】频谱非线性变换电路是将输入信号频谱沿频率轴进行不失真的搬移。
【单选题】The relationship between the exchange rate and the prices of tradable goods is known as the:
A.
Purchasing-power-parity theory
D.
Balance-of-payments theory
【单选题】What’s the relationship between Mike and the woman? A.Good friends. B.A couple. C.Fellow workers.
【判断题】( ) 9. Reference refers to the relationship between different languages.