温度是选择润滑油或润滑脂的重要原则。对润滑脂来讲，当温度超过120℃时，要用特殊润滑

发布时间：2019-12-04 18:32 │ 来源：www.tikuol.com

题型：单项选择题

问题：

温度是选择润滑油或润滑脂的重要原则。对润滑脂来讲，当温度超过120℃时，要用特殊润滑脂，当温度升高到200℃～220℃时，再润滑的时间间隔要缩短。对于润滑油来讲，油池温度超过（）℃或轴承温度超过200℃时，可采用特殊的润滑油。

A.20

B.40

C.90

考点：机械工程润滑油知识润滑油知识题库

题型：单项选择题

完形填空。

     More than 3,000 languages are spoken on the earth today. Many of these languages are spoken 1 small
groups of people. On the   2 hand, over 200 languages are spoken by one million or more people. Chinese is the
language spoken by the   3 number of people in the world. But English is most   4 spoken in the world.
     English is spoken by more than 400 million people   5 their first language. It is   6 by most people in the
U.S.A., Great Britain, Canada, Australia and New Zealand. And it is   7 used very widely in many other
countries of the world.
     Look at the back of your watch. You may see the English words "Made   8 China, or Japan, even
Germany." English is the first language in   9 of these countries. Why are English words  10 on it? That is
because in the modern world English is widely used for business between different countries.

( ) 1. A. as
(    ) 2. A. other
(    ) 3. A. biggest
( ) 4. A. wide
(   ) 5. A. of
(    ) 6. A. spoke
(   ) 7. A. either
(    ) 8. A. at
( ) 9. A. no one
(   ) 10. A. written

B. by
B. others
B. bigger
B. wider
B. in
B. spoken
B. as well
B. of
B. none
B. wrote

C. for
C. another
C. largest
C. widest
C. by
C. speak
C. also
C. with
C. nothing
C. write

D. with
D. the second
D. larger
D. widely
D. as
D. speaking
D. too
D. in
D. no
D. writing

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可用于判定奶牛乳腺炎炎症程度的指标是（）

A.ATP

B.pH值

C.乳糖浓度

D.孔汁体细胞计数

E.乳酸脱氢酶

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钉齿的断面有（）（）（）（）等多种

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鼻腔鼻窦癌肿起源于黏膜上皮或腺上皮，最多见的是（）。

A.腺癌

B.淋巴上皮癌

C.鳞状细胞癌

D.基底细胞癌

E.移行细胞癌

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全部工作完成，经工程承包人认可后，（）劳务分包人向工程承包人递交完整的结算资料，双方按照本合同约定的计价方式，进行劳务报酬的最终支付。

A、12天内

B、14天内

C、15天内

D、28天内

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