为什么要对分块式导轴瓦的间隙进行调整?

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问题:

为什么要对分块式导轴瓦的间隙进行调整?

考点:水轮机检修工考试初级水轮机检修工初级水轮机检修工题库
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引发“南斯拉夫一分为五”“捷克斯洛伐克一分为二”“民主德国和联邦德国合并统一”等现象出现的历史事件是

A.华约建立

B.东欧剧变

C.古巴导弹危机

D.美苏争霸

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对修辞方法依次作出正确判断的一项是[ ]

①一颗新芽简直就是一颗闪亮的珍珠。

②难道你就不想到它的朴质,严肃,坚强不屈,至少也象征了北方的农民?

③我用什么办法报答母亲的深恩呢?我将继续尽忠于我们的民族和人民,尽忠于中 * * 党。

④蚊子战胜了狮子,又吹着喇叭,唱着凯歌飞走了。

A、夸张  反问  设问  比喻

B、比喻  反问  设问  拟人

C、夸张  设问  反问  比喻

D、比喻  设问  反问  拟人

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阅读理解。

     Ellen Parker was worried about her health. She could not walk very quickly and it was difficult for her

to climb stairs. She was soon out of breath."I suppose I had better go to the doctor." she thought. She went

to the doctor and told him her problem. "I'm not at all surprised." he said, "I know what your problem is."

He examined her and then gave her some advice. "If you don't do what I say, Mrs. Parker," he said, "You

will have a heart attack. It could kill you."

     Ellen was very worried as she left the doctor's. She knew that she had to take his advice but that it would

not be easy and it would take time.

     The next day she went shopping. The first shop she went into was a butcher shop.

     "I'd like ten pounds of steak, please." she said.

     "Certainly, madam." the butcher replied and went into the cold room and found a large piece of steak. He

brought the huge piece of meat back into the shop and placed it on the scale.

     "That's just ten pounds." he said.

     "That's big enough." Mrs. Parker said.

     The butcher worked out the price. "At $4.99 a pound that will be $49.90, please. Would you like me to

cut it up into smaller pieces for you?"

     "Oh, I don't want to buy the meat." Mrs. Parker said.

     "If you don't want to buy it," the butcher replied angrily, "Why did you ask me to get it for you?"

     "My doctor told me that I am too heavy and have to lose ten pounds. I wanted to see what ten pounds of

meat looked like."

1. Why did Ellen Parker visit the doctor? [ ]

A. She had a heart attack.

B. She had a problem with her health.

C. She was unhappy about her weight.

D. She could not sleep well.

2. Why did Ellen Parker ask for ten pounds of steak? [ ]

A. She wanted to buy some for dinner.

B. She wanted to lose weight.

C. Her doctor had told her to eat steak.

D. She wanted to see what ten pounds of meat looked like.

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果实套袋防治果树食蚜虫属于()。

A.农业防治

B.化学防治

C.物理机械防治

D.生物防治

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治疗月经不调,咳血,齿痛,失眠,耳鸣,咽喉肿痛,可取

A.治疗月经不调,咳血,齿痛,失眠,耳鸣,咽喉肿痛,可取

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