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【简答题】
When you apply a job as areceptionist in a five-star hotel, which of the following statements can bebest answer for the question “What do you usually do for fun in your leisuretime”? A. I want to do nothing in my spare time. B. I like watching English TV programs and Movies. With the help of them, I can not only know more about the foreign peoples and cultures, but also my English has been improved. C. There is nothing I like more than ballet. D. Smart phone is my best friend after work.
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【简答题】有一小信号跨导放大器以LC并联谐振回路作为负载，那么该放大器可以视为一个有增益的带通滤波器或有带通选频特性的放大器。现要求工作中心频率为10MHz，带宽500kHz。已知放大器输出等效电流源信源导纳G o 为0.1mS，信源输出并联电容为30pF，求构成并联谐振回路的电感L和电容C分别为多少?其中电感的无载Q值为50。