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"脚踏板"相关考试题目
1.
脚踏板距离轨面高度为（）。
2.
操纵（）时，要有木制脚踏板。
3.
操纵( )时，要有木制脚踏板。
4.
单脚操作的脚踏板分为（）
5.
Today, bicycles are elegantly simple machines that are common around the world. Many people ride bicycles for recreation, whereas others use them as a means of transportation. The first bicycle was in...
6.
脚踏板的形状一般是( )的。
7.
脚踏板
8.
单脚操作的脚踏板分为（）
9.
Today, bicycles are elegantly simple machines that are common around the world. Many people ride bicycles for recreation, whereas others use them as a means of transportation. The first bicycle was in...
10.
缝纫机脚踏板
11.
起跳脚踏板着地时是
