问题
单项选择题
表面力作用在被研究流体的表面上，其大小与受作用面积（）。
A.无关
B.成反比
C.成正比
D.不确定
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
表面力作用在被研究流体的表面上，其大小与受作用面积（）。
A.无关
B.成反比
C.成正比
D.不确定
参考答案：C
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| This is our classroom. It's not big, but it's very nice. The walls are _1_ and the desks and chairs are new. On one of the walls, there is a _2_ and we can find Beijing, Shanghai and Hangzhou on it. There are some _3_ on the teacher's desk. They are for our _4_ , Miss Gao. She is a good teacher and we all like her. I'm on _5_ today. I come to school early. I help my teacher _6_ her books and pictures on her _7_. I tell her everyone is here. But I'm _8_, Liu Mei is not at _9_. I don't know _10_ she is. But I think she's at home. | ||||
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