引起CBF改变最重要的因素是()。 A.交感神经调节 B.颅内压 C.血压50~15

题型:单项选择题 A1/A2型题

问题:

引起CBF改变最重要的因素是()。

A.交感神经调节

B.颅内压

C.血压50~150mmHg变化

D.PaO2

E.PaCO2

考点:卫生资格考试(中初级)麻醉基础知识麻醉主治医师基础知识模拟试题一
题型:单项选择题 A1/A2型题

阅读理解。

     You may have heard of snipers (狙击手), or seen snipers in movies and computer games. They are

people who can shoot and kill from a long distance. But do you know that we have real snipers in our

police?

     Early this month, a man kidnapped a little girl with a knife in Beijing. Police came to talk to him, but he

didn't let the girl go and was hurting the girl. A sniper shot him dead.

     In Beijing, there are over 300 police snipers. They work 24 hours a day, seven days a week to protect

the capital.

    How do snipers get trained? What are their lives like? An expert (专家) with the Beijing sniper team shares

some of the team's secrets with us.

    Q: How do you choose snipers?

    A: We choose snipers from the Beijing police. There are no strict rules about the height and weight of our

snipers, but they must have very good eyesight. The weapon (武器) they use is around 3.5kg. Sometimes

snipers need to hold it for hours. So, snipers need to have a strong body. They also need to pass written

psychology (心理) tests.

    Q: What is the most important quality of a sniper?

    A: A good state of mind. Snipers need to be calm all the time. Sometimes, they may get ready for shooting

for a whole day. They cannot talk, eat or drink during that time.

    Q: What kind of training do snipers usually get?

    A: The practice they often get is 100 meters distance shooting. They practice shooting in all kinds of

weather, including windy and snowy days. 

    Q: Is it possible that a sniper may miss his target (目标)?

    A: That is not possible. The only standard (标准) for being a sniper is to take a life with one bullet (子弹).

    However, snipers are not killers. They only pull the trigger (扣动扳机) when they have to.

1. Which of the following is NOT true about the snipers?

A. They are professional (专业的) killers.

B. They can shoot very far.

C. They protect our country.

D. They are in our police force.

2. A good sniper should have the following except _______.

A. a strong body

B. good eyesight

C. a certain height

D. good state of mind

3. The underlined word "quality" means _______.

A. 质量

B. 品质

C. 性格

D. 性质

4. The most practice the snipers get is _______.

A. holding the gun for a whole day

B. doing push-ups and sit-ups

C. 100m distance shooting

D. jumping over high walls

5. The snipers' work is _______.

A. hard and important

B. interesting and exciting

C. boring but comfortable

D. funny but unimportant

题型:单项选择题 A1/A2型题

- I usually go there by train.

- Why ____ there by plane for a change?[ ]

A. don't go    

B. not to go      

C. not go    

D. not you go

题型:单项选择题 A1/A2型题

属于渗透性腹泻的是()

A.霍乱

B.口服甘露醇

C.口服盐类泻剂

D.急性肠炎

E.乳糖缺乏

题型:单项选择题 A1/A2型题

晨昏线上各地的太阳高度角()

A.等于0度

B.大于0度

C.小于0度

D.等于90o

题型:单项选择题 A1/A2型题

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