问题 问答题 案例分析题

某公司对其使用多年的办公大楼进行装修,包括地面、墙面、屋顶等部分,要求美观、大方、经济、环保,符合公司的形象。某家装修公司承包了该工程的设计和施工。设计中采用了实木木板、饰面人造板的固定家具、石膏板吊顶的方案。施工完成后外形美观、大方,但检测发现,室内空气甲醛浓度超标,不能验收。问题:(1)该工程中,造成甲醛超标的可能原因是什么?(2)室内主要污染物质的来源有哪些?(3)为了防止室内环境污染,保证工程质量,装修公司材料员在选用人造木板、1497、饰面人造木板等材料时,应注意哪些方面?

答案

参考答案:

(1)施工中选用实木地板的饰面漆、做固定家具的大芯板、饰面人造板都有可能甲醛超标,从而造成室内空气污染甲醛浓度超标。

(2)来源有:①胶合板、细木工板(大芯板)、纤维板和刨花板等人造木板中使用的胶粘剂、表面涂饰的油漆,及其添加剂和稀释剂;②贴墙布、化纤地毯、化纤窗帘、泡沫塑料、空气消毒剂和杀虫剂的溶剂、熏制食品、油墨、打印机、复印机、煤气、密封胶、防水材料、香烟,以及超标石材、瓷砖等。

(3)居室工程属Ⅱ类民用建筑,选择人造木板、饰面人造木板必须采用E1类产品,当采用E2类产品时,直接暴露于空气的部位应进行表面涂覆密封处理。

阅读理解

阅读短文,选择正确答案。

    We are all called upon to make a speech at some point in life, but most of us don't do a very good job. This

article gives some suggestions on how to give an effective speech.

    So, you have to give a speech and you're terrified. You get nervous, you forget what you want to say, you

stumble over words, you talk too long, and you bore your audience. Later you think, "Thank goodness, it's

over. I'm just no good at public speaking. I hope I never have to do that again." 

    Cheer up! It doesn't have to be that bad. Here are some simple steps to take the pain out of speech making.

Ask yourself the purpose of your speech. What is the occasion? Why are you speaking? Then, gather as many

facts as you can on your subject. Spend plenty of time doing your research. Then spend plenty of time

organizing your material so that your speech is clear and easy to follow. Use as many examples as possible, and

use pictures, charts, and graphs if they will help you make your points more clearly. Never forget your audience.

Don't talk over their heads, and don't talk down to them. Treat your audience with respect. They will appreciate

your thoughtfulness. 

    Just remember: be prepared. Know your subject, your audience, and the occasion. Be brief. Say what you

have to say and then stop. And be yourself. Let your personality come through so that you make

person-to-person contact with your audience. If you follow these simple steps, you'll see that you don't have to

be afraid of public speaking. In fact, you may find the experience so enjoyable that you volunteer to make more

speeches! You're not convinced yet? Give it a try and see what happens.

1. The main idea of this article is _______. [ ]

A. you can improve your speaking ability   

B. a poor speaker can never change   

C. always make a short speech   

D. it is hard to make a speech

2. Paragraph 2 implies that _______. [ ]

A. many people are afraid of giving a speech   

B. many people are happy to give a speech   

C. many people do not prepare for a speech   

D. many people talk too long

3. The phrase "talk over their heads" means ________. [ ]

A. speak too loudly   

B. look at the ceiling   

C. look down upon them   

D. use words and ideas that are too difficult

4. All of the following statements are true except that _______. [ ]

A. few people know how to make good speeches   

B. a lecturer does not need to organize his speech   

C. research is important in preparing a speech   

D. there are simple steps you can take to improve your speaking ability

5. The title for this passage may be _______. [ ]

A. Do Not Make a Long Speech   

B. How to Give a Good Speech   

C. How to Prepare for a Speech   

D. Try to Enjoy a Speech

单项选择题