The main chemical composition of gypsum is()
The main chemical composition of gypsum is()
A.calcium sulfate
B.calcium aluminate
C.CaO
D.Al2O3
正确答案:calcium sulfate
The main chemical composition of gypsum is()
A.calcium sulfate
B.calcium aluminate
C.CaO
D.Al2O3
正确答案:calcium sulfate
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