题目内容

在转速、电流双闭环调速系统，稳态运行的平直段和下降段，ASR和ACR分别工作在线性状态还是限幅状态？

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在一个转速、电流双闭环V-M系统中，转速调节器ASR、电流调节器ACR均采用PI调节器。

According to the author, a teacher should NOT_.

A. explain how policemen protect the pupils
B. have bias towards everything she/he wants to tell pupils
C. develop proper attitudes through science matters
D. attempt to change pupils' attitudes

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试从下述各方面来比较双闭环系统和带电流截止环节的单闭环系统：

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A. shifts B. switches C. sections D. classe

A. shifts
B. switches
C. sections
D. classes

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