汽车发动机构造与维修（第4版） 下载 pdf 电子版 epub 免费 txt 2025

本书是中等职业教育国家规划教材，内容包括发动机总体构造与维修、曲柄连杆机构的构造与维修、配气机构的构造与维修、汽油机燃料供给系统的构造与维修、柴油机燃料供给系统的构造与维修、润滑系统的构造与维修和冷却系统的构造与维修。 本书可作为中等职业学校汽车专业教材，汽车维修企业的技术人员也可参考学习。

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前言

书籍介绍

本书是中等职业教育国家规划教材，内容包括发动机总体构造与维修、曲柄连杆机构的构造与维修、配气机构的构造与维修、汽油机燃料供给系统的构造与维修、柴油机燃料供给系统的构造与维修、润滑系统的构造与维修和冷却系统的构造与维修。 本书可作为中等职业学校汽车专业教材，汽车维修企业的技术人员也可参考学习。

• 作者：VANESSA_ 发布时间：2018-09-03 23:07:59

  悲伤的故事，有些人成为了时代的牺牲品，悲哀却无力，这个时代的飞速发展，甩下了落后的、被忽略的角落，那些跟不上脚步的人们只能自己挣扎，就像我们这许多人在历史里都是小小的看不见的尘埃一样，只能随风摆动。超级喜欢书里文天与文水的往来信件，文笔太美了，一出口就感觉人物饱腹诗书，满满的文学气质。--听于喜马拉雅有声小说

• 作者：Erik 发布时间：2010-09-16 01:29:28

  盖达尔，丘拜斯

• 作者：微笑的影子 发布时间：2020-08-01 20:14:46

  国产性启蒙绘本，尺度略大(⁎⁍̴̛ᴗ⁍̴̛⁎)

• 作者：椰子岛边梦 发布时间：2022-09-02 10:20:29

  技巧讲得不错，就是示例照片一般

• 作者：wzpjnu 发布时间：2013-02-14 14:25:17

  中国的疆域和人口，中国的自然环境，中国的自然资源，中国的区域差异

• 作者：eien99 发布时间：2013-12-24 21:49:58

  仰慕蔡鲁公之为人及地位和才能，收藏

• The America unknown

  作者：小黄兔 发布时间：2021-07-10 16:17:25

  Paul Theroux is a very productive travel writer. The first book I have read by Paul Theroux is the

  Riding the Iron Rooster

  . As a Chinese, I am curious to see what Post-Mao China look like through his eyes. But I found it a bit disappointed. He obviously know not much about China and thus offer no insight of China’s issues. Realized that I might judge it unfairly , I gave it another shot by reading

  Deep South

  .

  This one is a surprise and a joy. It is not like ordinary travel book; it is more like a social observation. As an American, he can easily access to the South and in no hurry to leave, he can revisit places and people he has met before. This offer us more details and information than those one-time-only travel. Being an American that has travel to many countries, especially the developing countries, gives him an advantage to understand the conflicts and raise meaningful questions.

  What most people see through media and internet are most likely related to North America, the rich and the power, the exotic life style, high tech and leading academic achievements. The South is less mentioned and less visible to the public eyes. And the South is not the romantic South in the

  Gone of the Wind.

  All this year, I tried to study and understand America but resource are limited. But the more I read, the more I came to an understanding that, the problem in America is not merely racial conflict. The twice Victories of Trump is also a sign that something seriously wrong in America, there are something we might neglect to see or refuse to admit.

  Reading the

  Deep South

  is like personally travelling there, to see the people, to witness the history and to understand human nature with sympathy. I used google map to track places he been to and used street view to see local landmarks. I searched murders, civil right events, writers and their work (Randall, Mary T, Charles Portis). There are lots of stories told, information for the past and present, discussions by people with different views. It could be overwhelming if you read it half-hearted or with sleepy mind. That is why I read only one chapter a day before sleep and never read it when I feel tired.

  Growing up in China, I have witnessed what is poor and what is rich. After I moved to Australia and have been travelled to many places, I found out, there are poor people in Australia but “The Poor” here is quite different from the Poor in China. In Western countries like America, UK, Australia, the economic development and power are higher so most of the people do have a job or at least receive some social benefit. But they are working poor, homeless poor, landowners or farmers living in shabby houses, nomad poor that live in trailers or constantly moving e.t.c. Of course there are lazy people pretend to be sick and live on social benefit ( I know some personally) but they are also poor. But in China, the Poor are the ones can’t find a job, live in unimageable small pigeon holes or homeless, always starving and rarely received social benefit or Medicare. The conditions are in different form but at the end, they are all miserable and suffering.

  The issue in America, in my view, is more likely due to poverty than race issues. Poor White, Poor Black, all the same. Anti-China is not without a reason. A lot of factories have moved to Asia, mostly to China, took away millions of jobs. People without much education have limited alternatives. They have no way but leave their home to other places that have better job opportunities. Ghost towns are everywhere and people who stay are the ones most suffering (not everyone afford to move). Outsourcing not only took away livelihood, worse still, skills and diversity are lost. The country has to rely on fewer economic sources that producing wealth (for example IT and Finance industry) and at the same time rely on importing cheap everyday products from Asia. Who paid for the price? I guess at least not the rich ones?

  The pandemic that we are battling with, could be a warning and a lesson that provokes us to remap the future of one’s country. With closing boarder and less international movement, we can’t rely on importing and exporting (the Earth no longer flat). Are there better options that can bring people better lives with less toll on environment (small organic farm maybe)? How to tide over disaster without hating each other? What our future will look like?

  I keep thinking all sort of different things during reading. Questions keep coming up in my mind. On one hand I think human being are hopeless and there is no way that lives could be better. On the other hand, I still have a bit of hope that human can survive and we can do something about it, we can help in different sort of way. Paul Theroux’s travel to the South and told us what he encountered, is one of the ways. It brings us together and offer us opportunity to know human condition, to ponder with the possibility of change.

• 当代我们太急功近利了，我们更需要的是民族的自信与耐性了！

  作者：阿楠 发布时间：2010-07-17 00:06:11

  起初去西单图书大厦是要去买《菜根谭》的，在古代哲学专栏里面到处都是各种各样的某某读经典，XX解读经典，找到一本合适自己的书并不容易。看到《呻吟语》与《菜根谭》一同放在不起眼的地方，翻开序，作者吕坤写道，”呻吟，病因也。呻吟语，病时疾痛语也。病中疾痛，惟病者之，难于他人道；“ 本书的背景是他看到疾痛的明朝在慢慢腐朽，于是写了这本书。当然，这本书是绝对的对自己修身有益处的，习惯了、看多了西方欧美的哲学，我们不如回归古人的修身智慧，绝对不比西方人差。

  当代我们太急功近利了，我们更需要的是民族的自信与耐性了！

  最后，

  古时读一本书难！

  现在读一本好书难！