“上部调节”和“下部调节”的概念?它们各起什么作用?

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问题:

“上部调节”和“下部调节”的概念?它们各起什么作用?

考点:炼铁工考试炼铁原理炼铁原理题库
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肱骨干中、下段长斜形骨折宜采用()

A.三角巾悬吊

B.切开复位钢板内固定

C.手法复位悬垂石膏固定

D.横"8"字绷带固定

E.骨牵引治疗

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药物相互作用对药效学的影响

强心苷与氯噻嗪联用容易发生心律失常

A.拮抗作用
B.敏感化作用
C.作用相加或增加疗效
D.增加毒性或不良反应
E.协同作用和减少不良反应

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阅读理解。

                                                      Less TV Reduce Kids Weight

      PALO AITO, California-" Switching off the television may help prevent children from getting fatter-even

if they do not change their diet or increase the amount they exercise," US researchers said last week.

     A study of 192 third and fourth grades, generally aged eight and nine, found that children who cut the

number of hours spent watching television gained nearly two pounds (0.91 kg ) less over a one-year period

than those who did not change their television diet.

     "The findings are important because they show that weight loss can only be the result of a reduction in

television viewing and not any other activity," said Thomas Robinson, a pediatrician (儿科专家) at Stanford

University.

     " American children spend an average of more than four hours per day watching television and videos or

playing games, and rates of childhood being very fat have doubt over the past 20 years," Robinson said.

     In the study, presented this week to the Pediatric Academic Societies' annual meeting in San Francisco,

the researchers persuaded about 100 of the students to reduce their television viewing by one-quarter to

one-third.

     Children watching fewer hours of television showed a significantly smaller increase in waist size and had

less body fat than other students who continue their normal television viewing, even though neither group ate

a special diet nor took part in any extra exercise.

     "One explanation for the weight loss could be the children unstuck to the television may simply have been

moving around and burning off calories," Robinson said.

      "Another reason might be due to eating fewer meals in front of the television. Some studies have suggested

that eating in front of the TV encourages people to eat more," Robinson added.

1. The author tries to tell us in the first two paragraphs that ______.

A. children will get fatter if they eat too much.

B. children will get thinner if they eat less.

C. children will get fatter if they spend less time watching TV.

D. children will get fatter if they spend more time watching TV.

2. According to the passage, the time American children usually spend on watching TV ______.

A. is more than four hours a day.

B. is less than four hours a day.

C. doubled in the last twenty years.

D. is more than on any other activities.

3. The time children spend on TV viewing every day is suggested to be about _______.

A. six hours

B. eight hours

C. three hours

D. one hour

4. Which of the following is right?

A. Children usually eat fewer while watching TV.

B. Children usually eat more while watching TV.

C. Children eat the same amount of meals while watching TV.

D. Children usually eat nothing while watching TV.

5. Why can watching TV increase kids' weight according to the passage?

A. They usually eat more while watching TV.

B. They burn off fewer calories.

C. They change their diet while watching TV.

D. Both A and B

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关于腰椎间盘脱出症的说法正确的是()。

A.以男性多见

B.有急慢性损伤史

C.腰4~5、腰5、骶1腰椎间盘脱出最为常见

D.往往在负重时突感疼痛

E.以女性多见

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下列信息管理工作不正确的是()

A.从组织上予以保证

B.从经济上予以保证

C.落实进行任务分工和职能分工

D.落实具体管理岗位和人员

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