【判断题】
挂车前适当撒砂,列车起动前适当压缩车钩可以防止空转
A. 对
B. 错
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答案
A
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【判断题】
机车运行中,由于弹簧的振动,动轴载荷产生不均和变化以及线路状态与线路坡道的大小等原因,均会致使机车粘着重量发生变化
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附加阻力是机车、车辆运行在某些特定条件下才能遇到的阻力
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列车在曲线上运行时的阻力大于相同条件下直线上的运行阻力
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货物列车起动前压缩一部分车辆的车钩,发车时使列车中的车辆逐辆起动,再加上各车钩缓冲弹簧的伸张力,就会使列车起动变得顺利、轻便
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【判断题】
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