下列有关墙面渗水的预防措施正确的是( )。

A．砌块出池后应有足够的静置时间(30～50

B．设置心柱、伸缩缝、在相应部位配筋

C．控制铺灰厚度和长度

D．加强灰缝砂浆的饱满度的控制

Speaker A: Next please! Hello, may I help you, sir
Speaker B: ().

A. Hi, do you have a larger size of this shirt

B. I’d like to make an appointment with Dr. Smith.

C. Yes. I want to send a registered airmail letter to Australia.

D. May I have a look at the menu first