题目内容

()决定了凸轮机构从动件预定的运动规律。

A. 凸轮转速
B. 凸轮轮廓曲线
C. 凸轮的形状

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作等速运动的凸轮机构从动件在速度变换处将产生()冲击,引起机构强烈地振动。

A. 刚性
B. 柔性
C. 既有刚性又有柔性

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