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简述涂装定义、涂料的概念？

答案

参考答案：

涂装定义：将涂料覆于工件表面上，经干燥成膜的工艺过程。已固化成膜的涂料膜称为涂膜。

涂料的概念：涂于物体表面，能干燥成膜的有机高分子化合物的胶体溶液或粉末叫有机涂料

填空题

已知|x|=2，|y|=3，且xy＜0，则x+y的值为______．
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完形填空

Good afternoon, ladies and gentlemen, my dear teachers and fellow graduates,

It is a great honor for    小题1:    to make a speech on behalf of（代表） the graduating class of 2014.

It has     小题2:  three great years for us to study in this beautiful school. Our teachers always try to     小题3:   their lessons lively and interesting. We have learned a lot    小题4:    our teachers over three years, but we could hardly succeed    小题5:    our teachers’ effort, our parents’ support and our classmates’ help. At this moment, I would like to thank all of you for   小题6:     you have done for us. As for my dear friends, I will never   小题7:    our friendship forever.

I wish our school   小题8:     beautiful and all of us a brighter future.

Goodbye, our beautiful school, our dear teachers and our friends.

Thank you for listening.
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