您所在位置： &
&nbsp&&nbsp&nbsp&&nbsp
2009年12月和6月英語六级听力原文_真题和答案学习啊.doc 46页
本文档一共被下载：
次 ,您可全文免费在线阅读后下载本文档。
下载提示
1.本站不保证该用户上传的文档完整性，不预览、不比对内容而直接下载产生的反悔问题本站不予受理。
2.该文档所得收入(下载+内容+预览三)归上传者、原创者。
3.登录后可充值，立即自动返金币，充值渠道很便利
需要金币：150 &&
2009年12月和6月英語六级听力原文_真题和答案学习啊
你可能关注的文档：
··········
··········
学英语简单吗？肯定会有许多学生说：“难死了”。为什么有好多学生对英语的学习都感到头疼呢？答案只有一个：“不得法。” 英语与汉语一样都是一种语言，为什么你说汉语会如此流利？那是因为你置身于一个汉语环境中，如果你在伦敦呆上半年，保准说起英语来会非常流利。但很多中学生没有很好的英语环境，那么你可以自己设置一个英语环境，坚持“多说”、“多听”、“多读”、“多写”，那么你的英语成绩肯定会很出色。 一、多“说”。 自己多创造机会与英语教师多讲英语，见了同学，尤其是和好朋友在一起时尽量用英语去问候，谈心情……这时候你需随身携带一个英汉互译小词典，遇到生词时查一下这些生词，也不用刻意去记，用的多了，这个单词自然而然就会记住。千万别把学英语当成负担，始终把它当成一件有趣的事情去做。 或许你有机会碰上外国人，你应大胆地上去跟他打招呼，和他谈天气、谈风景、谈学校……只是别问及他的年纪，婚史等私人问题。尽量用一些你学过的词汇，句子去和他谈天说地。不久你会发现与老外聊天要比你与中国人谈英语容易的多。因为他和你交谈时会用许多简单词汇，而且不太看重说法，你只要发音准确，准能顺利地交流下去。只是你必须要有信心，敢于表达自己的思想。 如果没有合适的伙伴也没关系，你可以拿过一本书或其它什么东西做假想对象，对它谈你一天的所见所闻，谈你的快乐，你的悲伤等等，长此坚持下去你的口语肯定会有较大的提高。 二、多“听” 寻找一切可以听英语的机会。别人用英语交谈时，你应该大胆地去参与，多听听各种各样人的发音，男女老少，节奏快的慢的你都应该接触到，如果这样的机会少的话，你可以选择你不知内容的文章去听，这将会对你帮助很大，而你去听学过的课文的磁带，那将会对你的语言语调的学习有很大的帮助。 三、多“读”。 “读”可以分为两种。一种是“默读”。每天给予一定时间的练习将会对你提高阅读速度有很大的好处，读的内容可以是你的课本，但最好是一些有趣的小读物，因为现在的英语高考越来越重视阅读量和阅读速度。每道题的得分都与你的理解程度有很大关系，所以经过高中三年阅读的训练后，你必定会在高考中胜券在握。 另一种是“朗读”这是学语言必不可少的一种学习途径。 四、多“写” 有的同学总是抱怨时间紧，根本没时间写作文。其实“写”的形式很多，不一定就写作文才提高写作能力。比如写下你一天中发生的一些重要的事情，或当天学了某一个词组，你可以创设一个语境恰如其份地用上这个词。这样即可帮你记住这个词的用法，又可以锻炼你的写作能力，比如学“wish”一词时，可写一小段如下： The teacher often asks us what we want to be in the future.My good friend Tom wishes to be a soldier.However,I'm different .I wish I were a teacher in the future.But my mother wishes me to be a doctor. 只几句话：但wish的几种用法已跃然纸上，这样写下来印象会深刻得多，这样比死记硬背wish的用法也有趣轻松的多。 学习英语不用花大块的时间，10分钟的散步可以练&说&,吃完饭后可以读一会儿英语小说，睡前听几分钟英语，可以使你得到更好地休息……只要你每天抽出一些时间来练英语，你的英语成绩肯定会很快提高的。 背英语单词技巧 1、循环记忆法 艾宾浩斯遗忘曲线 人的大脑是一个记忆的宝库，人脑经历过的事物，思考过的问题，体验过的情感和情绪，练习过的动作，都可以成为人们记忆的内容。例如英文的学习中单词、短语和句子，甚至文章的内容都是通过记忆完成的。从&记&到&忆&是有个过程的，这其中包括了识记、保持、再认和回忆。有很多 人在学习英语的过程中，只注重了学习当时的记忆效果，孰不知，要想做好学习的记忆工作，是要下一番工夫的，单纯的注重当时的记忆效果，而忽视了后期的保持和再认同样是达不到良好的效果的。 在信息的处理上，记忆是对输入信息的编码、贮存和提取的过程，从信息处理的角度上，英文的第一次学习和背诵只是一个输入编码的过程。人的记忆的能力从生理上讲是十分惊人的，它可以存贮1015比特(byte，字节)的信息，可是每个人的记忆宝库被挖掘的只占10%，还有更多的记忆发挥空间。这是因为，有些人只关注了记忆的当时效果，却忽视了记忆中的更大的问题--即记忆的牢固度问题，那就牵涉到心理学中常说的关于记忆遗忘的规律。 一、艾宾浩斯记忆规律曲线解释 德国有一位著名的心理学家名叫艾宾浩斯(Hermann Ebbinghaus，)，他在1885年发表了他的实验报告后，记忆研究就成了心理学中被研究最多的领域之一，而艾
正在加载中，请稍后...T-Max530 Braking Semi-Floating front brake disk_Yamaha Wave Disk_Braking_改裝零件_翔利車行有限公司|機車,零件,騎士用品總匯
⊙&Ridea MT-09 配件到港,歡迎查詢預購.&&⊙&SW-Motech MT-07,MT09 配件新貨上架.&&⊙&英國Oxford 超强車套 Stormex,Rainex 現貨供應.
查詢及報價
> T-Max530 Braking Semi-Floating front brake disk
T-Max530 Braking Semi-Floating front brake disk
& 優惠商品WRC Braking Technique
WRC Braking technology
Brakes are one of the most critical components on WRC racing car, and same stand for a tarmac or gravel events, and in slowing the car down play just as important a role in boosting overall speed. Quite apart from simply slowing the car, rally drivers use the brakes to position and balance the car on its approach to corners and to slide through tight
whilst maintaining engine speed.
Each car's brake setup is also different for gravel and asphalt rallies, owing to the different demands and usage in each condition.
For an asphalt rally, the WRC car mostly use 366X24 mm 6 groove brake discs mounted to aerospace grade aluminium mounting bells at the front of the car and 305mm discs at the rear.
These are wrapped by eight-pot calipers with titanium pistons on fronts and four-pot variants at the rear. On asphalt there is generally more available grip than on gravel, so more force can be exerted through the brakes without the
locking, generating more friction. Speeds are also generally higher, leading to higher loads.
As there is a lot of , you push the
quite hard so there is a lot of energy to dissipate in the brakes. There is a lot of heat being generated and the stages can be long. It is important that the temperatures do not keep going up and down and that they stabilize quite quickly. If the temperature keeps increasing the brakes will end up fading and losing power and performance. Running on tarmac means energy levels absorbed by the WRC brakes are considerably greater than those experienced during rallies on other surfaces.
Often, disc temperatures will reach extreme levels of up to 900&C (road car discs would not survive much above 600&C, at which point cast iron is starting to glow red). Tarmac pads for high performance WRC use are specially manufactured to offer possibly the highest temperature capability. Their unique formulation gives phenomenal bite and braking power, even at temperatures at which gravel rally pads either fade or start to deposit heavily on the discs, which can give rise to a loss of performance and consistency. Discs are often water cooled to improve efficiency.
Collection of WRC braking disc pads used by all WRC teams and considered as best racing products: , , , , , , , ,
Alcon Prodrive 6 pot water cooled caliper with 366 x 32 disc used in WRC, on the picture outer side of the grooved disc
Same as up, Alcon Prodrive 6 pot water cooled caliper with 366 x 32 disc used in WRC, on the picture inner side of the grooved disc. You can see suspension attachment points
Alcon Prodrive 8 pot water cooled caliper with 366 x 40 disc used in WRC, on the picture inner side of the grooved disc. You can see suspension attachment points.
The bigger discs and calipers enable more braking force to be exerted, slowing the car down more rapidly, and the increased surface area is more efficient as dissipating the resulting heat. Whilst the discs and brake pads are designed to work at a high temperature, there is an optimum level and overheating can lead to reduced performance. Never normally a consideration on the road, water jets can be used to cool the front brakes which can reach temperatures of 900&Celsius. The brake fluid temperature can also reach 120&Celsius.
There are two main reasons why bigger brakes are the key to getting more stopping power:
Bigger brakes (discs) have more surface area and can therefore get rid of more heat than smaller brakes, and heat is a brakes worst enemy. The heat can do three things: Melt the surface of your brake pads (glazing) which makes them smooth and reduce the friction between pad and rotor. Heat can make your calipers so hot that t boiling creates air bubbles and bubbles are compressible, which in turn allows you to press your brake pedal to the floor without any significant effect on your car's speed. And last but not least high temperatures are not good for the brake discs: Discs will tolerate heat up to a certain temperature, but higher than that they will warp, or even crack if the temperature is high enough. That is unless you have carbon brake discs like the ones used on F1 cars.
Bigger brakes have more leverage on the tire so less braking force from the brake makes for more stopping power at the tire.
WRC Brake 4 pot calipers Prodrive Alcon S4 - S10
WRC Brake 6 pot calipers Prodrive Alcon S6 - S10
WRC Brake 6 pot calipers
AP-Racing S11-on
By contrast, the brake setup for a gravel car is typically smaller, owing to the facts that braking forces are reduced on the loose surface, and the smaller wheels used on gravel would not physically fit over asphalt brake discs. In these conditions, the front discs are 305mm racing items, coupled to four-pot calipers both front and rear. The rear brakes remain the same for both surfaces.
On asphalt, the front brakes do the vast majority of the work in slowing the car down, so
will tend to be set towards the front. Brake bias is the split of the braking force between the front and rear brakes. On gravel, the bias will be more towards the rear to help slide the car into the corners.
Hydraulic handbrake system in two flavors. on the picture above you can see handbrake version mostly used in WRC (Prodrive WRC GD Impreza carbon handbrake). Other version showed on the lover picture is handbrake stick and sequential shifter in Mini WRC car for 2013..
To help slide the rear on asphalt or gravel, the handbrake system is hydraulic and so very efficient. The lever is positioned where you'd expect a road car's gear stick to be, meaning that drivers can easily reach without moving their hand too far from the steering wheel. As with the rear brake setup, the handbrake is the same for both gravel and asphalt rallies.
To have a complete picture of performance driving, take a look at , , , , , , , , , , ,
technique and