问题
问答题 简答题
使用煤气应注意哪些安全问题？
答案
参考答案：
使用煤气的安全隐患是造成人员煤气中毒和爆炸。在每期输送时应保证煤气管道不泄漏；在使用时应做到先点火后开气。
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使用煤气应注意哪些安全问题？
参考答案：
使用煤气的安全隐患是造成人员煤气中毒和爆炸。在每期输送时应保证煤气管道不泄漏；在使用时应做到先点火后开气。
 Look at the paper in the picture carefully. Is there anything different from your notebook paper? This kind of paper feels as soft as your notebook paper. It’s also easy to write on. But do you know, this kind of paper is made from stone?As we know, stone is easy to get on the earth, so it’s cheap. And the stone paper is about 20% to 30% cheaper than ordinary paper. The stone paper causes little pollution and helps protect the environment, because it makes tree and water free. The following table shows what is needed to make one ton of stone paper and one ton of ordinary paper.
Now in Beijing, some students begin to use stone paper to do their homework. And during the two sessions (两会) in 2011, stone paper was also used. 小题1:Stone paper is ______________.
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