题目内容

串联负反馈不适用于信号源为理想电流源的情况。

A. 对
B. 错

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[音频]News Report One

A. He is a football player.
B. He is a tennis player.
C. He is a basketball player.
D. He is a swimming athlete.

News Report One[音频]

A. He helped Great Britain win the champion after nearly eight years.
B. He helped Great Britain win a worldwide reputation.
C. He helped Great Britain win the champion of Davis Cup.
D. He helped Great Britain win the World Cup.

News Report Two[音频]

A. The first lady of Venezuela.
B. A drug trafficker.
C. An undercover US agent.
D. A movie star.

News Report Two[音频]

A. In New York.
B. In London.
C. In Paris.
D. In Haiti.

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