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【单选题】
如图所示是探究 “阻力对物体运动影响”的实验装置.下列有关表述 错误 的是
A.
每次实验时,应使小车从斜面的同一高度
B.
小车受到的阻力越小,小车运动的路程就越远
C.
研究过程中采用了实验加推理的方法
D.
运动的小车如果不受阻力,它将一直静止不动
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A.
平方和的平方根
B.
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A.
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B.
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C.
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D.
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E.
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