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王老师:19139051760(拨打)
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第1题

We will have flown for 13 hours by the time we ________ to New York. 选择一项： A. will get B. get C. have
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第2题

( )4.As well as recognizing its staff through promotion, Xerox . 　　A. gives cash bonuses 　　B. gives unpaid leave to ta
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第3题

Our new type of treadmill ______ release next month. 选择一项： A. is due to B. is due for C. is due
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第4题

11．典型一阶惯性环节的时间常数可在单位阶跃输入的响应曲线上求得， 时间常数是 A 响应曲线上升到稳态值的95%所对应的时间 B 响应曲线上升到稳态值所用的时间 C 响应曲线在坐标原点的切线斜率 D 响应曲线在坐标原点的切
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