White cement is achieved by decreasing the ratio of Al2O3 to Fe2O3 in the raw materials._精华吧

White cement is achieved by decreasing the ratio of Al2O3 to Fe2O3 in the raw materials.

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White cement is achieved by decreasing the ratio of Al2O3 to Fe2O3 in the raw materials.

A.正确

B.错误

正确答案：错误

Tag：材料概论时间：2022-01-18 21:17:46

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