建筑高度不超过100m的高层民用建筑，应为火灾自动报警分级中的（）级。
A.特
B.一
C.二
D.三
参考答案：C
Children in school are ______into different levels of grades，according to how much they
know.
A．combined
B．classified
C．listed
D．clarified
分级衬板在磨内安装的方向是大端向着出料端。
