已知在298K时下述反应的有关数据: C(s)+1/2O2(g)═CO(g)△H

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问题:

已知在298K时下述反应的有关数据:

C(s)+1/2O2(g)═CO(g)△H1=-110.5kJ•mol-1

C(s)+O2(g)═CO2(g)△H2=-393.5kJ•mol-1

则C(s)+CO2(g)═2CO(g) 的△H 为(  )

A.+283.5kJ•mol-1

B.+172.5kJ•mol-1

C.-172.5kJ•mol-1

D.-504kJ•mol-1

考点:盖斯定律
题型:选择题

阅读理解。

       What is your favourite colour? Ask famous persons like Cate Blanchett, Scarlett Johansson and Bono, and

maybe they will say "green." That's not because these artists particularly like the colour green. Instead, they are

interested in green fashion. 

       Green fashion is about making (and wearing) clothes that are good for humans, animals, and the Earth. In

the past, green fashion made people think of hippies (嬉皮士) and ugly clothes. But today, green fashion is

different. It is about looking good and caring about the Earth and other people. You can have interesting clothes

and be green.

       Around the world, green fashion is becoming popular. For example, the U. K. company People Tree sells

men's and women's clothing and accessories (饰品). They are made from natural fabrics (织物) like cotton and

wool. Workers who make the clothes are from countries like Nepal, Kenya, and Bangladesh. People

Tree pays the men and women good money for the clothes they create.

       Singer Bono and his wife also started a clothing company called EDUN. When the clothes sell, EDUN uses

most of the money to help people around the world.

1. According to the passage, what is "green fashion"? [ ]

A. Wearing the colour green all the time.

B. Making clothes from green trees.

C. Putting green make-up on your face.

D. Wearing clothes that are good for the Earth.

2. In the past, what did people often think of when they heard "green fashion" [ ]

A. Dangerous animals.

B. Beautiful women.

C. Colourful accessories.

D. Ugly clothes.

3. Which sentence about green clothing companies is true? [ ]

A. Most use natural fabrics to make clothes.

B. Many do not pay their workers well.

C. They make clothes mostly for women.

D. Most of the companies are in Africa.

4. According to the passage,what does EDUN do? [ ]

A. It teaches children to make clothes.

B. It sells clothes and uses the money to help people.

C. It gives clothes to poor people.

D. It makes expensive clothes for teenagers.

题型:选择题

警告动臂下严禁()。

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根据有关规定,下列工程保修金扣除的正确做法是( )。

A.累计拨付款额达到建安工程造价的一定比例停止支付

B.在第一次结算工程款中一次扣留

C.在施工前预交保修金

D.在竣工决算时一次扣留

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一流行性出血热患者进入少尿期1周,尿量100ml/24小时,出现脉洪大,脉速,血压23.3/13.5kPa,伴气促,头痛、喷射性呕吐,神志模糊、瞳孔等大。此综合征是()

A.血尿素氮及肌酐过高所

B.高血容量综合征表现

C.颅高压引起

D.脑疝引起

E.高血钾的表现

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下列哪项不是医疗保健机构的职责?()

A.为所有孕产妇提供艾滋病、梅毒和乙肝的检测与咨询

B.对感染的孕产妇实行首诊负责制

C.为艾滋病感染孕产妇及其所生儿童提供抗病毒药物应用、安全助产、喂养指导、儿童定期随访与检测

D.承担全国的预防艾滋病、梅毒和乙肝母婴传播技术指导工作

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