【填空题】
22132.___电动机上的绝对光轴编码器是用来检测运动加速度的。
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【填空题】
22155.___为减少机械传动部件的扭矩反馈对电机动态性能的影响，机械传动系统的基本固有频率应低于电气驱动部件的固有频率的 2～3 倍，同时，传动系统的固有频率应接近控制系统的工作频率，以免系统产生振荡而失去稳定性。
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( ) 26. Where does the writer of "The little Prince" come from?
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【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
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( ) 30. Why did the father not ask his son not to do this and do that？
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( ) 34. Judy Foreman copied down the phrase because she ___ .
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( ) 36. What can we infer from the last paragraph?
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( ) 37.The greatest river for navigation is ___________.
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【单选题】
( ) 39. The water in the river is polluted because of _____________.
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( ) 40. The best title of the passage is ___________.
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