饰面板粘结不牢固的主要原因（）
A.基层清扫不干净
B.墙面浇水不透
C.一次打底抹灰层过厚
D.冬季砂浆或面砖受冻
参考答案：A, B, C, D
- A nice shirt! A present?
- Yes, it is. My aunt ＿＿＿＿＿＿ it to me for my last birthday.
A．was sending
B．had sent
C．will send
D．sent
何谓痛经？临床如何辨析？
