问题 问答题 简答题

换用更高质量级别,但同一粘度等级不同品牌的机油是否会产生油压降低的现象?为什么?

答案

参考答案:

在实际中有时会出现这种情况,如果原来使用的是低档油,在使用过程中会在油路中产生沉积物,使油路中的阻力较大而油压表会显示出来较高的值。如果换用高档机油其清净分散性能非常好,会在发动机工作几个小时后逐渐清除掉缸体内部及油路中的污垢。由于现代机油在发动机运行的同时净化了发动机的缸体的油路,减少了堵塞,这时候油压会略有降低,使有些司机误认为新油太稀或者质量不好。恰恰相反,正是这种清净分散性好的高质量机油为发动机进入完全及最佳的润滑状态创造了条件。

阅读理解

阅读表达。

     People used to say, "The hand that rocks the crade (摇篮) rules the world," and" 2) Behind every successful man, there's a woman." Both these sayings mean the same thing: Men rule the world, but their wives rule them.

     Most of the American women like making their husbands and sons successful. But some of them want

something for themselves. They want good jobs. When they work, they want to be better paid, they want to be

as successful as men.

      The American women's liberation movement 1)_________ __________ by the women who don't want to

stand behind successful men. They don't want to be told that certain jobs of offices are closed to them. They

refuse to work side by side with men who do the same work for a higher pay.

     A liberated woman must be proud of being a woman and confidence herself. If somebody says to her.

"You've come a long way, baby." She'll smile and answer,"Not nearly as far as I'm going to go, baby." This

moment is quite new, and many American women do not agree. But it has already made some important

changes in women's lives-in men's lives, too.

1. 将1)句的空白填入适当的词,使句意完整,上下文通顺:

__________,__________.

2. 将2句译成中文:

________________________________________________________.

3.What must a liberated woman be proud of?

___________________________________________________________________________

4. 在文章中划出与下列句子意思相近的句子:She isn't so satisfied with success.

___________________________________________________________________________

5.根据文章内容,从文中找出或写出一个最适合的标题.

___________________________________________________________________________

问答题 简答题