stepstep3000第三册unit9答案及原文

上传人:cl****1 文档编号:460004455 上传时间:2023-11-25 格式:DOC 页数:18 大小:60KB
返回 下载 相关 举报
stepstep3000第三册unit9答案及原文_第1页
第1页 / 共18页
stepstep3000第三册unit9答案及原文_第2页
第2页 / 共18页
stepstep3000第三册unit9答案及原文_第3页
第3页 / 共18页
stepstep3000第三册unit9答案及原文_第4页
第4页 / 共18页
stepstep3000第三册unit9答案及原文_第5页
第5页 / 共18页
点击查看更多>>
资源描述

《stepstep3000第三册unit9答案及原文》由会员分享,可在线阅读,更多相关《stepstep3000第三册unit9答案及原文(18页珍藏版)》请在金锄头文库上搜索。

1、Unit 9 ways to TravelPart I Warming upA1. This news item is about Boeings 18 billion new orders this year for its new 777 jetliner.2. This news item is about possible mergers between airlines.A2 Tapescript:1. Boeing, the worlds leading commercial airplane maker, announced it has 18 billion dollars i

2、n new orders this year for its new 777 jetliner. This figure puts demand for the Boeing aircraft ahead of comparable models produced by rival Airbus of Europe.2. British Airways and Dutch carrier KLM confirm they are in act of merger talks. Swiss Air won approval for taking majority control of Belgi

3、ums Sabena Airlines and there was another flurry of take-over discussions among some major American carriers. They come on the heels of number one United Airlines offer to buy number six U. S. Airways two weeks ago. The nations number two, American Airlines, and the countrys third largest, Delta, ha

4、ve been having what are described as preliminary discussions about a possible combination. American had reportedly been talking with Northwest about a hook up as well. The top three U.S. airlines, United, American and Delta currently control 56 percent of U.S. air traffic. If the mergers go through,

5、 theyd control 85 percent.BMonorail1. Monorail systems rely on a very simple technology: rubber-tired cars riding on a narrow concrete guide-way.2. Monorail systems are capable of speeds of 65 miles per hour and offer ride quality comparable to conventional rail transit technologies.3. Monorail syst

6、ems are safe and more environmentally sensitive than any other elevated transit technology.4. And noise and neighborhood disruption caused by monorail construction are dramatically lower than other forms of mass transit.Maglev1. One of the most exiting recent innovations in railroad technology is ma

7、gnetic levitation, or Maglev, which relies on the principle of magnetism - attraction and repulsion.2. This new technology will result in trains that are faster, smoother, more efficient, more comfortable, and more environmentally sound.Light Rail1. Light rail transit is an electric railway system c

8、haracterized by its ability to operate single cars or multi-car trains along shared or exclusive rights-of-way at ground level, on aerial structures, in subways, or occasionally in streets.2. It is able to board and discharge passengers at station platforms or at street, track, or car-floor level, a

9、nd is normally powered by overhead electrical wires.3. The maximum speed of light rail trains is normally 60 miles per hour (100 km per hour).4. Passenger capacity of each car in a multiple car consist can be up to as many as 250 passengers (standees included).Tapescript:1. MonorailMonorail systems

10、rely on a very simple technology: rubber-tired cars riding on a narrow concrete guide-way. The cars are self propelled by electric motors with power pickup via distribution bars mounted on the side of the guide-way. Monorail systems are capable of speeds of 65 miles per hour and offer ride quality c

11、omparable to conventional rail transit technologies.Monorail systems are safe because the design and nature of monorail systems make it very difficult for trespassers to access the guide-way and power rails.Monorail systems are more environmentally sensitive than any other elevated transit technolog

12、y due to the monorails narrow guide-way structure and quiet rubber tires. Also, since many of the pylon and rail components can be prefabricated elsewhere and then assembled along the routes, the noise and disruption of construction will be kept to a minimum. Thus, noise and neighborhood disruption

13、caused by monorail construction are dramatically lower than other forms of mass transit.2. MaglevOne of the most exiting recent innovations in railroad technology is magnetic levitation, or Maglev, which relies on the principle of magnetism- attraction and repulsion. This new technology, still under

14、 development, will result in trains that are faster, smoother, more efficient, more comfortable, and more environmentally sound. No longer will trains rumble heavily along steel rails; rather, they will float along a magnetic cushion without any direct contact with the ground.3. Light RailLight rail

15、 transit is an electric railway system, constructed in the 1970s or later, characterized by its ability to operate single cars or multi-car trains along shared or exclusive rights-of-way at ground level, on aerial structures, in subways, or occasionally in streets. It is able to board and discharge

16、passengers at station platforms or at street, track, or car-floor level, and is normally powered by overhead electrical wires.In most current settings, light rail is anything but light and is built to exacting standards. The maximum speed of light rail trains is normally 60 miles per hour (100 km per hour), while heavy rail trains normally operate at higher speeds. Depending upon the specific system, the distance

展开阅读全文
相关资源
相关搜索

当前位置:首页 > 建筑/环境 > 施工组织

电脑版 |金锄头文库版权所有
经营许可证:蜀ICP备13022795号 | 川公网安备 51140202000112号