说明燃烧氧化-非分散和红外吸收法中,直接法测定总有机碳的原理。

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问题:

说明燃烧氧化-非分散和红外吸收法中,直接法测定总有机碳的原理。

考点:超声医学与技术(医学高级)胃肠胃肠题库
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漏电保护器安装后应进行试验,用试验按钮试验()次,均应正确动作。

A、1

B、2

C、3

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阅读下面几位同学在网上聊天的记录, 完成1-5 小题。

1.From Ted to Nicole.

     The tsunami(海啸)i11fhe India Ocean happened on December 26,2004.When I heard about the event.I was Waiting at the airport.Do you know this event? What were you doing that day?

From Nicole to Ted:

     Yes.While I was walking in the park,I heard the terrible news.

2.From Alice lo Kathy

     Xiao Shenyang performed successfully in the New Year's Party.When I heard it.I  was having dinner at home.What about you?

From Kathy to A lice:

     Great news! I knew it while I was chatting with my family in the living room on the New Year's Eve.

3.From Jackson to Andrew

     While I was visiting my grandpa in the hospital,I heard our country's Shenzhou Ⅶspacecraft(宇宙飞船)came back.It was a great success.What were you doing then?

From Andrew to Jackson:

     I was playing chess with my father when this exciting event happened on September28,2008.

1.Did the tsunami happen in the India Ocean?

     __________________________________________

2.When did Shenzhou Ⅶ spacecraft come back?

     __________________________________________

3.Was Jackson playing chess with his father when Shenzhou Ⅶ spacecraft came back?

     __________________________________________

4.What was Kathy doing while Alice was having dinner?

     __________________________________________

5.How many events did these young people talk about?

     __________________________________________

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扩展的生态价值评价法中计算各个栖息地的保护价值的公式是()

A.

B.

C.

D.

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阅读理解

     More and more people are coming under the umbrella of fatness in modern times. Not just adults, but

even children are getting overweight. Today some of the newborn babies are also born fat. It has been

proved that the people living in the developed Western countries are more likely to become overweight.

There are a number of causes behind this.

     The people in the developed countries including the United States almost enjoy all the comforts of life. Almost all the things in the lives of the people living in these countries are at their fingertips. A very limited

amount of movement and physical effort is required to do any kind of job. Because of the fact that these

countries are quite developed, most of the jobs that the people take up are desk jobs. So the lifestyle of

them is just around the office desk.

     Most of the developed Western countries are cold ones. Nature demands that people eat the food

that can somehow make them stand the coldness. Therefore, wine fatty dairy products, bread, junk food

and red meat become an important diet in these countries.

     However, the blame cannot be entirely put on the unhealthy eating habits of the people. Technology

allows them to import almost all the foods products that they do not grow. Although some healthy food

are grown in the countries nowadays, the quantity is very limited. It is not enough to meet the demand.

So when they are not available and fatty foods are cheaper, then people prefer to go for the eating habit

that they have always been following.

1. According to Paragraph 2, most people in the developed countries do________jobs.

A. physical      

B. management

C. desk    

D. tiring

2. According to the text the ________plays a key role in the fatness in the developed Western countries.

A. culture

B. gene(基因)

C. education

D. weather

3. The underlined word in Paragraph 4 refers to________.

A. the healthy foods

B. the people in the developed countries

C. the fatty foods

D. the unhealthy eating habits

4. The purpose of the author in writing the text is to________.

A. warn people of their bad eating habits in the developed countries

B. remind people of the relation between food and weight gain

C. inform people of the causes of weight gain in the developed countries

D. tell people that fatness in the developed countries is natural

5. People in the developed countries often________.

A. carry umbrellas with them

B. blame the fatness on the weather

C. grow a lot of healthy foods in their countries

D. eat to protect themselves from the cold

题型:问答题 简答题

食品中锌含量的测定方法是()

A.密度瓶法

B.邻菲罗啉光度法

C.火焰原子吸收光谱法

D.水蒸汽蒸馏法

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