题目内容

以下关于IIR滤波器的设计说法错误的是( )。

A. IIR滤波器可以以模拟滤波器为原型进行设计
B. 如果要在时域逼近模拟滤波器,可以用脉冲响应不变法
C. 脉冲响应不变法可以设计高通滤波器
D. 双线性变换法设计需要进行预畸变

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双线性变换法会造成频率严重的非线性关系。

A. 对
B. 错

What is the relationship between the narrator and Jerry?

A. Parent- child relationship
B. Friends
C. Marriage bonds

What line of business is Jerry in?

A. Restaurant manager
B. Engineer
C. Salesman

What mistake did Jerry make one morning?

A. He lost the keys of the back door.
B. He forgot to lock the back door of the restaurant.
C. He shot someone.

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