选择题:The passage shows that .( )(本题3.0分)

题目内容:
The passage shows that .( )(本题3.0分) A the average survival time of condors is satisfactory
B Rideout’s research interest lies in electric engineering
C the efforts to protect condors have brought good results
D researchers have found the final answers to the problem

参考答案:

下列关于转速反馈闭环调速系统反馈控制基本规律的叙述中,错误的是( )。A 只用比例放大器的反馈控制系

下列关于转速反馈闭环调速系统反馈控制基本规律的叙述中,错误的是( )。A 只用比例放大器的反馈控制系统,其被调量仍是有静差的B 反馈控制系统可以抑制不被反馈环节

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