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在生产装置的空气中苯的最高容许浓度为多少？苯通过什么途径进入人体？（KHD：安全与环保知识）

答案

参考答案：

在生产装置的空气中苯的最高容许浓度为40毫克／立方米。在生产过程中通过呼吸道进入人体，液态苯也可以经皮肤吸收进入人体内。

单项选择题

知识产权是指民事主体依法享有的专有权利，以下表述中正确的是( )。

A．知识产权是不具有物质形态的智力成果

B．知识产权在所有国家或地域均有效

C．法律没有规定知识产权的有效期限

D．法律规定的知识产权的有效期限均相同
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翻译题

完成句子

1. It was very dangerous because if I was caught I ________________(我可能要坐牢). (put)

2. The old man became very worried, standing at the gate, unable to find a man to ________________(他可以求助的). (turn)

3. Only then ________________(他才愿意)take my advice that the meeting be put off. (willing)

4. The old man ________________(非常喜欢)travelling that he spent almost all his savings for it.

(fond)

5. What's the name of the place ________________(你度假的) last year? (spend)

6. Neil Armstrong and Edwin Aldrin were the first ________________(登上月球的). But they were

not the last. (land)

7. On the mountain ________________(有一座庙)at an altitude of more than 3,000 metres above

the sea level. (lie)

8. The miners ________________(被困的)in the mine for days were finally rescued.(trap)

9. It was because of his burning up the government building ________________(他被判刑)2 years.

(sentence)

10. It is reported that many a new house ______________(被建造)at present in the disaster area.

(construct)
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