找平层的排水坡度应符合设计要求：采用材料找坡宜为（）
A.1%
B.2%
C.2.5%
D.3%
参考答案：B
It had never________him that he might get a job offer from such a big international company.[ ]
A. occurred
B. expected
C. struck
D. happened
按照功能分类，窗体可以分为哪几种？
