对混凝土拌合物运输的基本要求是（）。
参考答案：不产生离析现象、保证浇筑时规定的坍落度
(2013·重庆高考)—Would you like a glass of wine?
—________. I don't drink.
A．No, thanks
B．Yes, please
C．I don't like it
D．It's my favorite
吊顶的组成及作用是什么？
