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行程开关的触头是通过（）来实现的。

行程开关的触头是通过（）来实现的。
A.声控
B.生产机械运动部件的碰撞
C.手指的按压
D.手指的按压或生产机械运动部件的碰撞
正确答案：B

标签：机械运动部件手指

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