多级放大电路的输出电阻约等于()。
A. 第一级放大电路的输出电阻
B. 末级放大电路的输出电阻
C. 中间级放大电路的输出电阻
多级放大电路(不失真)的放大倍数约等于()。
A. 单级放大倍数相加
B. 单级放大倍数相乘
C. 单级放大倍数相减
采用阻容耦合的放大电路,前后级的静态工作点互相影响
A. 对
B. 错
Fill in the blanks with the right form of the following words.mental tropical quit submit manufacture1.Theytheir reports yesterday.2.The factory is now trying to a new model.3.They do serious harm torainforest.4.The ordeal has affected both her and physical health.5. He the show last year because of bad health.