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     一辆汽车在行驶中发生漏油，假如每隔l s漏下一滴，车在平直公路上行驶，一位同学根据漏在路面上的油滴分布，分析汽车的运动情况（已知车的运动方向）。下列说法中正确的是（   ）                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              A．当沿运动方向油滴间距逐渐增大时，车一定在做减速直线运动

    B．当沿运动方向油滴始终均匀分布时， 车可能做匀速直线运动

    C．当沿运动方向油滴间距逐渐增大时，车一定在做匀加速直线运动

    D．当沿运动方向油滴间距逐渐增大时，车的加速度一定也增大

     

     B

     

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