柴油车排放污染的防治方法有()。A、前处理净化 B、机内净化 C、机后净化 D、前三

题型:单项选择题

问题:

柴油车排放污染的防治方法有()。

A、前处理净化

B、机内净化

C、机后净化

D、前三者全是

考点:汽车修理工考试汽车修理工(高级)汽车修理工(高级)题库
题型:单项选择题

由小到大的一组数:1,2,x,5,6,7中,这组数的中位数是4,则x为(  )

A.2

B.3

C.4

D.5

题型:单项选择题

当地下水埋藏较深或有固定含水层时,宜采用的地下水排除设施是()。

A.渗沟

B.渗井

C.检查井

D.暗沟

题型:单项选择题

  Directions: Read the following passage. Answer the questions according to the information given in the passage and the required words limit. Write your answers on your answer sheet.

Like fine food, good writing is something we approach with pleasure and enjoy from the first taste to the last. And good writers,good cooks,do not suddenly appear full-blown. Quite the contrary, just as the cook has to undergo an intensive and hard-working training, mastering the skills of his trade, the writer must sit at his desk and devote long hours to achieving a style in his writing, whatever its purpose-schoolwork, matters of business,or purely social communication. You may be sure that the more painstaking the effort,the more effective the writing and the more rewarding.

There are still some remote places in the world where you might find a public scribe(抄写员) to do his / her business or social writing for a fee. There are a few managers who are lucky enough to have the service of that rare kind of secretary who can take care of all sorts of letter writing with no more than a quick note . But for most of us, if there is any writing to be done, we have to do it ourselves.

We have to write school papers, business papers or home papers. We are constantly called on to put words to paper. It would be difficult to count the number of such words,messages,letters,and reports put into the mails or delivered by hand,but the daily figure must be enormous. What is more,everyone who writes expects,or at least hopes, that his writing will be read.  We want to arouse and hold the interest of the readers. We want whatever we write to be read, from first word to last, not just thrown into some "letters-to-be-read" file (档案)or into a wastepaper basket. This is the reason we make our efforts toward learning and practicing the skills of interesting, effective writing.

71. What is good writing compared to in this passage and why? ( No more than 10 words.)

_________________________________________________________.

72. Find in the passage a word closest in meaning to the underlined word “painstaking”.

_________________________________________________________.

73. According to the passage, why don’t some managers have to do any letter writing? ( No more than 15 words.)

__________________________________________________________.

74. According to the author, if your letter is thrown into some “ letter-to-be-read” file, what will be likely to happen?   (No more than 6 words.)

__________________________________________________________.

75. What is the author’s purpose in writing this passage?  (No more than 15 words.)

_________________________________________________________.

题型:单项选择题

下列计量单位中,( )不是工程量清单计量的基本单位。

A.英寸

B.m3

C.m3

D.块

题型:单项选择题

可配平的水平安定面何时不能用?

A、黄和绿液压系统故障后

B、决不会失效,总是可人工使用

C、蓝液压系统故障后

D、飞行增稳计算机1和2失效后

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