火电厂的制粉系统要求煤粉直径不大于()
A.30mm
B.50mm
C.60mm
D.75mm
参考答案:A
---- The new shop across the road has taken away most of my .
----We must sell something cheaper.
A.things
B.business
C.customers
D.lists
湖北省少数民族聚居地区被称为巴楚文化的活化石的最典型建筑是______。