四六级英语作文范文？写作范文1 1.运动的积极因素 2.运动的消极因素 3.你的体会 Sports benefit us in many respects.（根据main idea 写出topic sentence。那么，四六级英语作文范文？一起来了解一下吧。
排放冷却是对流冷却的另一种。与再生冷却不同，用于排放冷却的冷却剂对推力室冷却吸热后不进入燃烧室参与燃烧，而是排放出去。直接排放冷却剂会降低推力室比冲，因此需要尽可能减少用于排放冷却的冷却剂流量，同时只在受热相对不严重的喷管出口段采用排放冷却。还有一种是辐射冷却，其热流由燃烧产物传给推力室，再由推力室室壁想周围空间辐射散热。辐射冷却的特点是简单、结构质量小。主要应用于大喷管的延伸段和采用耐高温材料的小推力发动机推力室。在组织推力室内冷却时，是通过在推力室内壁表面建立温度相对较低笑巧的液体或气体保护层，以减少传给推力室室壁的热流，降低壁面温度，实现冷却。内冷却主要分为头部组织的内冷却（屏蔽冷却）、膜冷却和发汗冷却三种方法。推力室采用内冷却措施后，由于需要降低保护层的温度，所以燃烧室壁面附近的混合比不同于中心区域的最佳混合比（多数情况下采用富燃料的近壁层），造成混合比沿燃烧室横截面分布不均匀，使燃烧效率有一定程度的降低。膜冷却与屏蔽冷却类似，是通过在内壁面附近建立均匀、稳定的冷却液膜或气膜保护层，对推力室内壁进行冷却，只是用于建立保护层的冷却剂不是喷注器喷入的，而是通过专门的冷却带供入。冷却带一般布置在燃烧室或喷管收敛段的一个横截面上。
在大学英语四六级考试中，作文的占分比重是比较大的，因此备考时应该重点复习。整理了扮码四六级满分英语作文，供大家学习。
四级满分英语作孙饥文
It's well known that books are the quintessence of human wisdom. Reading is to the mind what exercise is to the body. There are many famous sayings about reading throughout the history such as Reading makes a full man. Indeed, the importance of reading can never be too much stressed. Thus, here comes to how to develop such ability.
To begin with, as an old proverb says, Practice makes perfect., what we need to do is to read as more books as we can, no matter whether it is a digital version or hardcover. Secondly, since there are a thousand Hamlets in a thousand people's eyes, we need to deliver our opinions to others and share with others. This could not only help understand the materials from different views but also improve our reading ability. Thirdly, making reading a habit could also improve it. The more fun we find in reading, the more we are willing to explore the books and thus help us strengthen that ability.
In a word, no matter at what time we realize the importance of reading, we can enjoy it during the rest of our life and finally we'll see that it is rewarding.
六级则缺返满分英语作文
In recent years, Sinology, the study of Chinese traditional culture, literature, history, society etc, has become increasingly popular For instance, it is reported that many primary and secondary schools have set up courses of sinology, in which students are taught classical works by Chinese ancient educators and philosophers, like Confucius- Another good illustration is in the program CCTV Lecture Room famous scholars, e.g, Yu Dan, give lectures on Chinese ancient philosophies and literatures.
Sinology becomes prevalent due to the fact that it is of vital significance for both the individuals and the society. For one thing, Sinology is the essence of Chinese civilization with more than 5,000 years. Thus, for individuals, they can enlarge their scope of knowledge, enrich their experience and adapt themselves to the complicated society. For another, it is acknowledged that the rehabilitation of Sinology can contribute to the establishment of a harmonious society.
In my opinion, all Chinese people should inherit the merits of Sinology. To do so, we can read books by ourselves or to attend lectures on this issue. Besides, we have the gation to popularize introducing it to the world By doing so, we can not only inherit it but also make it glorious and prosperous.
四级经典英语作文
(一)
How should college students relieve pressure?
Today's college students face many pressures, mainly from parents' expectation, study, economy, employment and all kinds of competition. Although pressure, to some extent, can provide motivation, overdue pressure has a serious negative affect. Pressure can destroy a student's confidence. More seriously it might make some students lose control of their emotions and behaviors.
Considering the great damage of overdue pressure, college students should learn how to relieve pressure. First, we should have a right evaluation of ourselves, so it's to make use of advantages and avoid disadvantages. Second, we should set a clear aim of struggle. The aim can give us motivation and make us become active. Third, attending collective activities is an effective way to relieve pressure. Finally, if you find pressure is nearly beyond your control, you'd better turn to professional psychological guidance.
As to me, my pressure is mainly from future employment. In order to reduce upset, I ask my parents to help me analyze my advantages and disadvantages and produce more practical job objection. So my employment pressure has been relieved greatly. Now I become very confident in my future, and I do believe I can get an ideal job after my graduation.
(二)
Students' Pursuit for Famous Brands
Nowadays many college students like to pursue famous brands. From clothes to mobile phones, even study articles like electronic dictionaries and pens, they are inclined to buy famous brands. Moreover, many students from poor families begin to follow this consumption trend as well. This phenomenon has aroused wide attention.
The following reasons can account for college students' preference for famous brands. Above all, in many college students' eyes, a famous brand is a symbol of sophistication and taste. They expect others to admire their high class and good taste. What's more, in modern society, famous brands to some extent are equal to fashion, which has a great attraction to young college students. Besides, parents' spoiling their children helps form their bad consumption habit.
As far as I am concerned, it is irrational for college students to pursue famous brands. After all, most of famous brands are far beyond their consumption ability. Besides, it is not famous brands but a person's noble character that really makes him high class. Therefore, college students should attach more importance to cultivating a good character rather than pursuing famous brands.
Lies and honest
Some peole hold the opinion that one who tell lies is dishonest whilesome others disagree with them.Many evidence could prove that every people tells lies throughout their life.there is no honest people in the world then.therefor in my view,i totally disagree with the former grup.
people forth to lie in some special sitiation.those lies may do no harm to anyone but can make thing easier.as the saying goes"one who knows himself a fool is one who is wise"we can also say"one who knows himself lies is one who is honest".on the contrary,if a person take telling lies for granted,and even not aware of what he is doing .when it become a habit in one's life,we can consider him as dishonest.in a word,we should get to know a person without any prejudece before juging him.
英语四六级作文
英枯和液语四六级作文，英语是我们学业里面重要学科之一，那么作文就是是英语四六级学习的重要内容之一，所以提高英语作文成绩是非常重要的，下面我就和大家分享英语四六级作文，希望能帮助到大家。
英语四六级没物作棚手文1
关于自尊的英语作文
Self esteem, also called self respect, is the respect we have for ourselves, for our belief in our ability and in the value of what we do. Self-esteem makes us independent in our thoughts and actions. It makes us feel confident that we can do things well and maybe even better the next time. It is an important quality we must have if we want to achieve success in whatever we do.
The degree of self esteem varies from person to person. People with high self esteem believe that they can finish whatever they have started. For example, they are active in class and can express their ideas clearly. They are the people who are likely to succeed in their lives. Those with middling self-esteem are like those with high self esteem, but they are not so sure of their own value. Those with low self esteem, however, have many problems. They are sad most of the time. They are afraid to start activities. They feel that no one loves them. They cannot express their ideas properly. In discussions, they listen but do not talk because they are afraid that they may say something wrong and may be laughed at. They are the people who need attention the most.
So in order to get more self esteem to live a successful life, we must firstly realize its importance. We should also seize every chance to practice gaining more self-esteem. We hope that we would have enough self-esteem so that we may have more chances to succeed in this competitive world. In the meantime, we should help those with low self esteem to have more self respect and confidence in whatever they do.
英语四六级作文2
关于垃圾分类的英语作文
The resources of the earth are limited. We should cherish and cherish these resources. So were going to do garbage sorting, and reuse the available resources again.
地球的资源是有限的'，我们要好好地爱护和珍惜这些资源。
背文章，还不如知道如何灵活运用。 下面有些饥薯考试常用的句型，不错，可以看看，然后自己学着造句，这样你就知道怎么运用这些句型，考试就好多了。
大学英语四级作文常用句型
一、~~~ the + ~ est + 名词 + (that) + 主词 + have ever + seen ( known/heard/had/read, etc)
~~~ the most + 形容词 + 名词 + (that) + 主词 + have ever + seen ( known/heard/had/read, etc) 例句：Helen is the most beautiful girl that I have ever seen. 海伦是我所看过最美丽的女孩。
Mr. Chang is the kindest teacher that I have ever had. 张老师是我曾经遇到最仁慈的教师。
二、Nothing is + ~~~ er than to + V Nothing is + more + 形容词 + than to + V
例句：Nothing is more important than to receive education. 没有比烂樱者接受教育更重要的事。
以上就是四六级英语作文范文的全部内容，2006年高考英语备考系列－作文点评0020 I. 习作要求： 现在，快餐在中国十分流行，尤其受到儿童和青少年的喜爱，但快餐对人的身体却没什么好处，请根据表格内容，以Fast Food为题写一篇作文。
