多级放大器总的电压放大倍数等于各级放大倍数之和。（）
参考答案：错
---What would you like to eat here?
--- ____ but noodles, which is not to my taste.
A．Anything
B．Nothing
C．Something
D．Everything
微分电路是以（）为输出端，积分电路是以（）为输出端。
A、电容
B、电抗
C、电阻
D、电感
