【单选题】放大电路中引入负反馈后,下列说法错误的是()
【多选题】Listen to the excerpt from Listening 2. Choose the phrases Tom uses.
B.
Could you say that again, please?
C.
Could you repeat that?
【判断题】对于一个放大电路来说,一般希望其输入电阻大些,以减轻信号源的负担,输出电阻小些,以增大带负载的能力。
【单选题】Choose the correct words or phrases to complete the sentences. I would have told him the answer ____, but I was so busy then.
C.
would it have been possible
【多选题】输出反馈: 下列错误的说法是()
A.
采用输出矢量y构成线性反馈律H为输出反馈增益阵
B.
采用输入矢量y构成线性反馈律H为输出反馈增益阵
C.
采用输出矢量y构成线性反馈律H为输入反馈增益阵
D.
采用输入矢量y构成线性反馈律H为输入反馈增益阵