题目内容:
The raw materials of the clinker of Portland cement include()
A.well-grading aggregates
B.mixing clay
C.lime-bearing minerals
D.gypsum
参考答案:【答案仅供学习,请勿对照自行用药等】
The raw materials of the clinker of Portland cement include()
A.well-grading aggregates
B.mixing clay
C.lime-bearing minerals
D.gypsum