保养时,发动机舱内部脏了可用水清洗吗?

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问题:

保养时,发动机舱内部脏了可用水清洗吗?

考点:汽车知识竞赛汽车知识竞赛题库
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为了除去氧化铜中的混入的少量杂质炭,可采取的措施是(    )

A.在氢气流中加热混合物

B.在密闭容器中加热混合物

C.在CO气流中加热混合物

D.在氧气流中加热混合物

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在Excel中,在保存好文件之后,要退出Excel程序有很多种方法,()不能退出Excel程序。

A.按组合键Alt+F4

B.按组合键CLRL+W

C.按组合键Alt+F,然后按字母键X

D.用鼠标左键单击Excel窗口右上角的关闭按钮

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“人的自由而全面发展”是马克思主义关于社会主义核心价值观论述的首要命题。

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What can we learn from the approach to scientific research in other cultures Consider British science. In the 1980s to mid-1990s, the United Kingdom consistently (67) many more populous countries in (68) number of papers produced and citations received per paper in science, medicine and engineering. During the 20th century, the United Kingdom (69) more major international scientific prizes per capita than any other nation—about 10% of all such (70) .
Many explanations have been (71) for this success. Some British attribute it (72) a superiority of intellect and character. (73) British scientists are a more elite group than American scientists, (74) selective pressure throughout secondary and undergraduate education. My experience in the United Kingdom (75) me to think that another significant reason for this (76) is the British style of scientific investigation. I must (77) that at first I was frustrated by the slower (78) of research in the United Kingdom in (79) with that in the United States. Having recently completed my doctoral research in the intense environment (80) of many U. S. universities, I thought that the greater relative emphasis that the British placed on thinking (81) doing was at best misguided, and at worst, lazy. (82) , I soon saw the advantages of being more selective (83) which problems to work on, which experiments to (84) , and which approach would best (85) the results. There were many occasions where I experienced such (86) contrasts in the approach to scientific research in different cultures. And the experience did enrich my intellectual life indeed.

A. Now that
B. And
C. Because
D. Yet

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请根据图2-5-3和图2-5-4的特点分析它们工资结构有哪些区别。

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