问题
单项选择题
挖掘机液压缸缸径变大，活塞杆直径和工作压力均不变，液压缸的作用力如何变化（）。
A.变大
B.变小
C.不变
D.不一定
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
挖掘机液压缸缸径变大，活塞杆直径和工作压力均不变，液压缸的作用力如何变化（）。
A.变大
B.变小
C.不变
D.不一定
参考答案：A
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