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已知两条电线杆之间的距离为300m．一列长200m的火车匀速行驶通过一条电线杆，用时10s．求 （1）这列火车的速度； （2）火车头尾全部在两条电线杆之间行驶的时间．
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教案备课库《2017-2018学年新疆乌鲁木齐市八年级（上）期末物理试卷》真题及答案
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