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> 不定项选择机车从静止开始沿平直公路做匀加速直线运动，若机车所受阻力恒定不变，则在此过程中，下列说法正确的是（） A．在任意连续相等时间内，合外力的冲量不相等 B．在任意连续相等时间内，机车动能变化量相等 C．机车输出功率不变 D．机车的输出功率逐渐增大

问题：

发布时间：2024-09-13

不定项选择机车从静止开始沿平直公路做匀加速直线运动，若机车所受阻力恒定不变，则在此过程中，下列说法正确的是（）
A．在任意连续相等时间内，合外力的冲量不相等
B．在任意连续相等时间内，机车动能变化量相等
C．机车输出功率不变
D．机车的输出功率逐渐增大

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