首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Computerised design, advanced materials and new technologies are being used to produce machines of a type never seen before.
Computerised design, advanced materials and new technologies are being used to produce machines of a type never seen before.
admin
2017-04-07
44
问题
Computerised design, advanced materials and new technologies are being used to produce machines of a type never seen before.
It looks as if it came straight from the set of Star Wars. It has four-wheel drive and rises above rocky surfaces. It lowers and raises its nose when going up and down hills. And when it comes to a river, it turns amphibious: two hydrojets power it along by blasting water under its body. There is room for two passengers and a driver, who sit inside a glass bubble operating electronic, aircraft-type controls. A vehicle so daring on land and water needs windscreen wiper—but it doesn’t have any. Water molecules are disintegrated on the screen’s surface by ultrasonic sensors.
【C1】The Unusual Vehicle
This unusual vehicle is the Racoon which is an invention not of Hollywood but of Renault, a rather conservative French state-owned carmaker, better known for its family hatchbacks.
【C2】The Design of the Neo Freedoms
The design of the neo freedoms is first step. Powerful computer-aided design (CAD) systems can replace with a click of a computer mouse hours of laborious work done on thousands of drawing boards.
【C3】CAD in Renault
But Renault is taking CAD further. It claims the Racoon is the world’s first vehicle to be designed within the digitized world of virtual reality.
【C4】Automotive Design Transformation by Virtual Reality
Renault is not alone in thinking that virtual reality will transform. In Detroit, Ford is also investigating its potential. Jack Telnac, the firm’s head of design, would like designers in different parts of the world to work more closely together, linked by computers.
Transforming these creations from virtual reality to actual reality will also become easier, especially with advances in materials. Firms that once bashed everything out of steel now find that new alloys or composite materials (which can be made from mixtures of plastic, resin, ceramics and metals, reinforced with fibres such as glass or carbon) are changing the rules of manufacturing. At the same time, old materials keep getting better, as their producers try to secure their place in the factory of the future. This competition is increasing the pace of development of all materials.
One company in this field is Scaled Composites. It was started in 1982 by Burt Rutan, an aviator who has devised many unusual aircraft. His company develops and tests prototypes that have ranged from business aircraft to air racers. It has also worked on composite sails for the America’s Cup yacht race and on General Motors’ Ultralite, a 100-mile-per-gallon experimental family car built from carbon fibre.
【C5】Race Between the Old and the New Reflected in the Racoon
The Racoon uses conventional steel and what Renault describes as a new "high-limit elastic steel"in its chassis.
With composites it is possible to build many different parts into a single component. Fiat, Italy’s biggest car maker, has worked out that it could reduce the number of components needed in one of its car bodies from 150 to 16 by using a composite shell rather than one made of steel. Aircraft and cars may increasingly be assembled as if they were plastic kits.
Advances in engine technology also make cars lighter. The Ultralite, which Scaled Composites helped to design for General Motors, uses a two-stroke engine in a "power pod" at the rear of the vehicle. The engine has been developed from an East German design and weighs 40% less than a conventional engine but produces as much power. It is expected to run cleanly enough to qualify as an ultra-low emissions vehicle under California’s tough new rules.
[A] Complex programs were used to simulate the vehicle and the terrain that it was expected to cross. This allowed a team led by Patrick Le Quement, Renault’s industrial-design director, to "drive" it long before a prototype existed.
[B] Renault built the Racoon to explore new freedoms for designers and engineers created by advances in materials and manufacturing processes. Renault is thinking about startlingly different cars; other producers have radical new ideas for trains, boats and aeroplanes.
[C] So new products, no matter how complicated, can be developed much faster. For the first time, Boeing will not have to build a giant replica of its new airliner, the 777, to make sure all the bits fit together. Its CAD system will take care of that.
[D] They would do more than style cars. Virtual reality will allow engineers to peer inside the working parts of a vehicle. Designers will watch bearings move, oil flow, gears mesh and hydraulics pump. As these techniques catch on, even stranger vehicles are likely to come along.
[E] This steel is 30% lighter than the usual kind. The Racoon also has parts made from composites. Renault plans to replace the petrol engine with a small gas turbine, which could be made from heat-resisting ceramics, and use it to run a generator that would provide power for electric motors at each wheel.
[F] It is generally accepted that the new age of transition has come. The traditional transportation means seem to be out of date.
【C2】
选项
答案
C
解析
本部分标题是The Design of the Neo Freedoms,[C]中有关键词new,to build与之对应,故为正确选项。
转载请注明原文地址:https://kaotiyun.com/show/VbbZ777K
0
考研英语一
相关试题推荐
"TheHeartoftheMatter,"thejust-releasedreportbytheAmericanAcademyofArtsandSciences(AAAS),deservespraiseforaffi
Duringthepastgeneration,theAmericanmiddle-classfamilythatoncecouldcountonhardworkandfairplaytokeepitselffin
Americansdon’tliketolosewars.Ofcourse,alotdependsonhowyoudefinejustwhatawaris.Thereareshootingwars—theki
Americansdon’tliketolosewars.Ofcourse,alotdependsonhowyoudefinejustwhatawaris.Thereareshootingwars—theki
Americansdon’tliketolosewars.Ofcourse,alotdependsonhowyoudefinejustwhatawaris.Thereareshootingwars—theki
Moulexisaworld-leadingmanufacturerofhomeappliances.With30yearsofrichexperience,weproduceandsellthemostreliab
WholesalepricesinJulyrosemoresharplythanexpectedandatafasterratethanconsumerprices,【C1】______thatbusinesseswer
Somehousesaredesignedtobesmart.Othershavesmartdesigns.AnexampleofthesecondtypeofhousewonanAwardofExcellen
TheJanuaryfashionshow,calledFutureFashion,exemplifiedhowfargreendesignhascome.OrganizedbytheNewYork-basednonpr
随机试题
患者女性,40岁。低热、盗汗、腹胀1个月就诊。查体:全腹轻压痛,肝脾未及,移动性浊音(+),腹水为黄色渗出液,腺苷脱氨酶(ADA)80U。结核性腹膜炎的抗结核治疗,下列哪项不正确
支气管扩张肺淤血
宫内孕8周,在当地行“药物流产”后排出血块及膜样组织2周,近1周来阴道出血及下腹疼痛,伴有畏寒、发热,妇查下腹压痛,宫颈口检查有臭味,子宫如孕40天大小,明显压痛,体温38.5℃,白细胞增高,应该
设计合同生效后,设计人要求终止或解除合同,设计人应( )。
在经营杠杆、财务杠杆与总杠杆中,作用最大的是总杠杆。()
甲公司(股份有限公司)因无法偿还乙公司4000万元货款,于2×17年8月1日与乙公司签订债务重组协议。协议规定甲公司通过增发1700万股普通股(每股面值1元)抵偿上述债务,股票发行价为2800万元。乙公司已对该应收账款计提了360万元坏账准备,并将取得的股
①3D模拟海啸袭击、解析肝癌细胞样本、大幅提高石油勘探效率……超级计算机的应用成果正日渐走入大众视野②国民经济、科学技术和国防领域的重大应用需求不断引领着超级计算机的发展③超级计算机是指计算速度最快、处理能力最强的计算机,旨在解决一些特
根据所给图表资料回答116-120题。以下说法与资料相符的是()。
第一次在中国树起共产主义的大旗,指明了中国革命的共产主义方向的刊物是
字长是CPU的主要性能指标之一,它表示()。
最新回复
(
0
)