建筑面积大于()m2且无法采用自动喷水灭火系统的丙类厂房，宜设置固定消防炮等灭火系统。
A.800
B.1000
C.2000
D.5000
参考答案：D
已知数据：2，-1，3，5，6，5，则这组数据的众数与极差的和是______．
What kind of pizza do you like? ___________ .[ ]
A. I like an olive and cheese pizza
B. I like pizza better .
C. I want to eat a pizza
D. I often go to buy a pizza.
