在瓦斯线上安装阻火器的目的是什么?

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问题:

在瓦斯线上安装阻火器的目的是什么?

考点:精细化工考试精细化工考试题库
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关于M2b中的异常中性中幼粒细胞的特征,叙述正确的是

A.细胞核的发育明显落后于细胞质,浆分内外浆,内浆有丰富的颗粒,外浆无颗粒
B.细胞质的发育明显落后于细胞核,浆分内外浆,内浆有丰富的颗粒,外浆无颗粒
C.细胞核与细胞浆发育迟缓,浆分内外浆,内浆有丰富的颗粒,外浆无颗粒
D.细胞核的发育明显落后于细胞质,浆分内外浆,内浆无颗粒,外浆有丰富的颗粒
E.细胞质的发育明显落后于细胞核,浆分内外浆,内浆无颗粒,外浆有丰富的颗粒

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阅读理解

     The medical world is gradually realizing that the quality of the environment in hospitals may play a

significant role in the process of recovery from illness.

     As part of a nationwide effort in Britain to bring art out of the galleries and into public places, some

of the country's most talented artists have been called in to transform older hospitals and to soften the

hard edges of modern buildings. Of the 2,500 National Health Service hospitals in Britain, almost 100

now have significant collections of contemporary art in corridors, waiting areas and treatment rooms.

     These recent initiatives owe a great deal to one artist, Peter Senior, who set up his studio at a

Manchester hospital in northeastern England during the early 1970s. He felt the artist had lost his place

in modern society, and that art should be enjoyed by a wider audience.

     A typical hospital waiting room might have as many as 500 visitors each week. What better place to

hold regular exhibitions of art? Senior held the first exhibition of his own paintings in the out-patients

waiting area of the Manchester Royal Hospital in 1975. Believed to be Britain's first hospital artist,

Senior was so much in demand that he was soon joined by a team of six young art school graduates.

     The effect is striking. Now in the corridors and waiting rooms the visitor experiences a full view of

fresh colors, playful images and restful courtyards.

     The quality of the environment may reduce the need for expensive drugs when a patient is recovering

from an illness. A study has shown that patients who had a view onto a garden needed half the number

of strong pain killers compared with patients who had no view at all or only a brick wall to look at.

1. According to the passage, "to soften the hard edges of modern buildings" means ___________.

A. to pull down hospital buildings

B. to decorate hospitals with art collections

C. to improve the quality of treatment in hospitals

D. to make the corners of hospital buildings round

2. According to Peter Senior, _______.

A. art is losing its audience in modern society

B. art galleries should be changed into hospitals

C. patients should be encouraged to learn painting

D. art should be encouraged in British hospitals

3. After the improvement of the hospital environment, patients may _______.

A. no longer need drugs in their recovery

B. no longer depend wholly on expensive drugs

C. need good-quality drugs in their recovery

D. use more pain killers in their recovery

4. The fact that six young art school graduates joined Peter shows that_______.

A. Peter's enterprise is developing greatly

B. Peter Senior enjoys great popularity

C. they are talented hospital artists

D. the role of hospital environment is being recognized

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凯恩斯理论的政策含义的核心是( )。

A.“流动性陷阱”的存在会使货币政策失效

B.国家对经济的直接干预是必要的

C.货币需求主要取决于人们的流动性偏好

D.货币供应主要取决于中央银行

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查体股骨颈骨折与股骨粗隆间骨折的主要区别是

A.髋部压痛
B.髋部肿胀
C.患侧下肢外旋60°
D.患侧下肢轴向叩击痛
E.患侧下肢短缩畸形

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污水中水垢的生成主要取决于盐类是否()以及其结晶的生长过程。

A.饱和

B.过饱和

C.溶解

D.电离

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