第2题
Before adhesion can take place between liquid and solid,it is essential that the liquid surface( )
A.provides some mechanical interlocking with the solid
B.exhibits a large contact angle with the solid
C.enters into some form. ofchemieal reaction with the solid
D.exhibits a small contact angle with the solid
此题为多项选择题。请帮忙给出正确答案和分析,谢谢!
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