The product methods of the rapid-hardening Portland cements include（）

The product methods of the rapid-hardening Portland cements include（）
A.adding gypsum
B.increasing the alite content
C.finer grinding of the clinker
D.finer grinding or better mixing of the raw materials
正确答案：increasing the alite content；finer grinding of the clinker；finer grinding or better mixing of the raw materials