题目内容

Modern aircraft structures must be able to _____ a strike from a bird weighing up to 4 pounds.

A. survive
B. withstand
C. avoid
D. beat

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Airports _____bird management and control in order to reduce bird strikes on takeoff and landing.

A. get in
B. involve in
C. engage in
D. immerge in

Since birds are famous for their _____, no single solution could work for all situations for long.

A. adaptability
B. flexibility
C. accessability
D. incredibility

以下4种运算电路中,对集成运放共模抑制比要求最高的是()运算电路。

A. 同相比例
B. 反相比例
C. 微分
D. 积分

欲将正弦波输入电压移相+90o,应选用()运算电路。

A. 同相比例
B. 反相比例
C. 对数
D. 积分

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