碳二加氢反应器紧急停车时的处理原则是()。A.反应器不飞温 B.反应器不超压 C.乙

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问题:

碳二加氢反应器紧急停车时的处理原则是()。

A.反应器不飞温

B.反应器不超压

C.乙烯精馏塔不污染

D.缩小事故范围

考点:乙烯装置操作工乙烯反应器系统乙烯反应器系统题库
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前臂长度测量从______至______。

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滴加1%钒酸铵硫酸溶液1滴,马钱子胚乳显()

A.红色

B.黄色

C.蓝色

D.紫色

E.蓝绿色

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     Winston Churchill was one of the great men of his age. To show their respect for him, the British

lawmakers asked a fine artist, Graham Sutherland, to paint Winston Churchill's picture. When it was

completed, it was presented to him, at a grand affair in the Westminster Hall, at the House of Commons (下议院).

     There is a famous film that shows Churchill accepting the gift. He describes the painting as "a

remarkable example of modern art", which draws loud laughter.

     In fact he must have been unhappy with the painting. Sutherland later reported that he asked whether

it was to be painted with a "happy" or "angry" attitude. "Angry," replied Churchill. At the time, Churchill

was coming to the end of his political life and was unhappy that people wanted him to end his career.

     Some twenty years later it was revealed that Lady Churchill hated the painting so much that she had it

destroyed. "It was preying on (折磨) his mind," she was reported as saying.

     A leading art critic was asked what he thought about the matter. He said he could understand Lady

Churchill and had pity on her. Graham Sutherland was a very honest artist, who could only paint what

he saw. At the time it was painted, Churchill was an old man, worried by the thought that he would have

to end his political career soon. But Lady Churchill shouldn't have had the painting destroyed. It could

have been stored away until after their deaths.

1. Why did the British lawmakers ask Graham Sutherland to paint a picture of Winston Churchill?

A. To show their respect for him.        

B. To make Churchill happy.

C. To put it in the Westminster Hall.        

D. To make Churchill unhappy.

2. Where was the painting of Winston Churchill after it was finished?

A. In Churchill’s home.                  

B. In Churchill's office.

C. In the Westminster Hall.              

D. In a busy town square.

3. Why was Churchill actually unhappy at that time?

A. Because he had to retire anti put an end to his political life.

B. Because the painting did not look like him one little bit.

C. Because Lady Churchill was not happy with the painting.

D. Because he was so very sick and did not feel well at all.

4. What is the author's attitude towards the painting being destroyed?

A. Approval.    

B. Disapproval.      

C. Anger.      

D. Indifference.

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离心泵在开车操作中应注意些什么?

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抛石防护宜在冬期枯水时施工。石块规格应符合设计要求,应按大小不同规格掺杂抛投,但底部及迎水面宜用较大石块。水下边坡不宜陡于(),顶面可预留()的沉落量。

A、1:1.5、10%~20%

B、1:1、10%~20%

C、1:1.5、15%~20%

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