题目内容

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

查看答案
更多问题

I was glad to learn that my friend Linda stoodin the beauty contest (选美比赛).

She couldn’t help letting that it was her brother who broke the window

Albert Einstein (爱因斯坦) is one of the most scientists of the 20th century

Match the basketball terms with the Chinese equivalents

答案查题题库