常用的水硬性胶凝材料是（）。 A.石灰 B.石膏 C.水泥 D.水玻璃

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问题单项选择题

常用的水硬性胶凝材料是（）。

A.石灰

B.石膏

C.水泥

D.水玻璃

答案

参考答案：C

单项选择题

A: Excuse me, Mr. Smith, but are you free this evening
B：().

A. Well, I’m afraid whether I will be free or not has little to do with you.

B. Yes, welcome to my home this evening.

C. Sorry, I don’t like to be asked such a private question.

D. I’m sorry , I have an appointment at seven.

判断题

五更泄泻、完谷不化均可由肾阳亏虚所致。