试题与答案

石膏的主要成分是( )。 A.氢氧化钙 B.氧化钙 C.碳酸钙 D.硫酸钙

题型:单项选择题

题目:

石膏的主要成分是( )。

A.氢氧化钙
B.氧化钙
C.碳酸钙
D.硫酸钙

答案:

参考答案:D

解析: 石膏是以硫酸钙为主要成分的气硬性胶凝材料,故选项D正确。选项A为熟石灰的主要成分,选项B为生石灰的主要成分,选项C为石灰硬化后的主要成分。

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