—John has hurt his leg.

—Really?       ?

A．Who did that

B．Why was he so careless

C．What’s wrong with him

D．How did that happen

（）是指对一些特殊的场所和重要的设备用房在建筑中进行合理的布置，达到减少火灾危害的目的。

A．建筑的总平面布局 

B．建筑的平面布置 

C．建筑分类 

D．建筑耐火等级