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问题 问答题 简答题

耐火材料有哪些使用性能？

答案

参考答案：

耐火度、荷重软化温度、抗渣性，耐急冷急热性、高温体积稳定性。

选择题
请为下列英文句子选择正确的中文意思。
( ) 1. We can take some pictures there.
( ) 2. There's a koala bear over there.
( ) 3. You didn't put film in the camera!
( ) 4. There is so much corn!
( ) 5. Don't be silly.		A. 你没有把胶卷装进照相机里！
B. 我们可以在那儿照相。
C. 别傻啦！
D. 有这么多玉米！
E. 那边有一只树袋熊。
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选择题

Was it because she was ill______she didn’t go to attend the meeting?

A．what

B．which

C．as

D．that
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