酸性天然气是指天然气中硫化氢的含量()。 A. B. C. D.

题型:单项选择题

问题:

酸性天然气是指天然气中硫化氢的含量()。

A.

B.

C.

D.

考点:燃气知识综合题燃气知识综合题题库
题型:单项选择题

阅读理解。

     Although it's foolish to smoke, fifty million people in the United States still do that. Most of them

want to give up smoking, but smoking is a habit that is not easy to break. Luckily, thirty-five million

Americans have stopped it.

     Frank used to (过去常常) smoke a lot. He started to smoke when he was 16. Many of his friends

were doing it, and it made him feel like a grown-up. His parents told him that he was making a mistake,

but he didn't listen to them. When he joined the football team in the United States, he stopped smoking,

but then he started again.

     A month ago, he had a pain in his chest and stomach. "The pain isn't too bad. I'm sure it will go away

and I'll be fine. I probably eat too much," he told his wife, Helen. But it didn't go away and they both

began to worry. Frank called the doctor. The doctor told him that Helen should drive him to the hospital

right away. They examined his heart, took a chest X-ray, and kept him in the hospital overnight (一整夜).

      The next day his doctor read the X-ray report. He told Frank that he was okay, and that he could

be back to work after a few days' rest. But he advised him to stop smoking. Frank and Helen were very

happy. They were afraid that they were going to get bad news.

     Since Frank stopped smoking, he has been feeling better. He doesn't cough in the morning the way

he used to. His house and car don't have smell of smoke, and his wife and children are breathing cleaner

air.

l. Today, the number of smokers in the United States is _____ it used to be. 

A. larger than          

B. smaller than

C. as large as          

D. the same as

2. Frank started to smoke when he was _____.

A. a football player

B. fifteen years old

C. with many of his friends

D. sixteen years old

3. What was wrong with Frank a month ago?   

A. He ate too much.

B. He had a pain in his chest and stomach.

C. He stayed in the hospital overnight.

D. He took a chest X-ray.

4. —In the hospital, why did they think they might get bad news?

    —Because _____.

A. Frank smoked a lot for a long time

B. he was kept in the hospital overnight

C. the pain didn't go away quickly

D. all of the above  

题型:单项选择题

男性,50岁。临床诊断肝挫伤,经保守治疗已出院2周。今日突发上腹部剧烈绞痛,黄疸,黑便。首先应考虑的诊断是()

A.胆道出血

B.胃癌出血

C.食管胃底静脉曲张破裂出血

D.胃十二指肠溃疡出血

E.应激性溃疡出血

题型:单项选择题

神经型食物中毒

题型:单项选择题

实训装置中共有几处用到方孔钥匙()。

A.1

B.2

C.3

D.4

题型:单项选择题

用于项目财务生存能力分析的指标是( )。

A.项目投资财务净现值

B.投资各方财务内部收益率

C.项目偿债备付率

D.项目净现金流量

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