分析冷水和热水配水器热水指示灯闪亮故障的原因及处理方法。

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问题:

分析冷水和热水配水器热水指示灯闪亮故障的原因及处理方法。

考点:动车组机械师考试CRH5型动车组机械师CRH5型动车组机械师题库
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已知实数x,y满足方程(x2+y2-1)2=4,则x2+y2=[ ]

A.3

B.-1

C.3或-1

D.-3或1

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阅读理解。

     Alice's Adventures in Wondertand is one of the most loved children's books of all time, and many adults

enjoy it as well. It tells the story of a young girl named Alice, who follows a rabbit entering a magical world

called Wonderland: she has many experiences which seem to change the rules of reasoning or common

sense. The popularity of the book comes from its imagination, interesting story, and art work.

     The writer of the book is Lewis Carroll-In fact, Lewis Carroll was not the writer's real name. His real

name was Charles Dodgson. One day, he took a boat ride down the Thames River to have a picnic with

three little girls who were friends of the family. To keep them entertained on the ride, he told them a story

in which Alice, the middle child, was the main character. They enjoyed the story very much.

     Charles later wrote the story down under the name Alice's Adventures Under Ground and gave it to Alice

as a Christmas present. Later, he gave a copy to his friend George MacDnald George read it to his children

and they loved it. George suggested to Charles that he make a book from his story. Charles then wrote more

parts to the story until it was around 35 000 words. It was first printed in 1866, with art work by John

Tenniel, under the name Alice's Adventures in Wonderland. The book was an immediate success.

     One of its first fans was Queen Victoria. She imrnediately requested a collection of all of Lewis Carroll's

works. She was surprised to find that they included many works on math. In fact, Charles Dodgson was a

highly respected mathematician.This can be seen in nmny puzzles and plays on reasoning that appear in his

books and poems.

     Since the story was first printed, it has kept selling up to the present day. It has been translated into over

fifty languages and has had several rnovies based on it. The story is even mentioned in the popular 1999 film

The Matrix by the character Morpheus.

1. The passage is mainly about _____. [ ]

A. Charles' family life

B. a girl's adventurous experience

C. a magical world called wonderland

D. the birth of a book and its lasting influences

2. Which of the followiIlg statements is TRUE according to the passage? [ ]

A. The writer published his works under his real name.

B. The character Alice originated from George's child.

C. John contributed partly to the popularity of the book.

D. Charles offered a copy to George for advice.

3. We can learn from the passage that _____. [ ]

A. Queen Victoria asked for a few of Charles' writings

B. Charles had a gift for reasoning and writing

C. Charles had an his works translated into fifty languages

D. The Matrix was based on Alice's Adventures in Wonderland

4. Which of the following is the right order of the passage?

    a. Charles gave his story to Alice as a Christmas present.

    b. Charles had a picnic with three little girls on the Thames. 

    c. Alice's Adventures in Wonderland was first printed in l866.

    d. More parts were added to the story by Charles. 

    e. The book won a large number of fans. [ ]

A. c-b-a-d-e

B. c-a-b-e-d

C. b-a-d-c-e

D. b-a-c-e-d

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《孔雀东南飞》是中国古代杰出的长篇叙事诗,叙述了一对青年男女的爱情悲剧,是汉乐府()诗发展的高峰。

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喷嘴

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2010年2G网络质量现场测试内容主要分为()和数据业务测试。

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