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
外语
The first bicycles were made of wood. Cycle manufacturers then switched to steel tubes. These days, for high-end bikes where wei
The first bicycles were made of wood. Cycle manufacturers then switched to steel tubes. These days, for high-end bikes where wei
admin
2013-10-22
81
问题
The first bicycles were made of wood. Cycle manufacturers then switched to steel tubes. These days, for high-end bikes where weight is at a premium, they use aluminium alloys(铝合金)or even carbon fibre. But Izhar Gafni, an amateur cyclist who owns a number of such fancy bikes, wonders whether the original inventors had a point. He proposes to go back to using wood—or, rather, a derivative(衍生物)of wood, namely cardboard.
Mr. Gafni, who is based in Ahituv, Israel, spent years trying to work out how to make a cardboard bicycle able to support the weight of a human being. The trick is twofold. First, he folds the cardboard commercial-grade material, made from recycled paper to increase its strength. Then, once it is folded, he treats the result with a proprietary resin(树脂)that holds it in shape and stiffens it, before cutting it into the form of the component required. A second application of resin renders the component waterproof, and a lick of lacquer(漆)makes it look good. The result, Mr. Gafni claims, is stronger than carbon fibre.
The bike’s frame, wheels, handlebars and saddle are all made of cardboard in this way, and then fitted together. The tyres—again harking back to the early days of cycling—are composed of solid rubber, which is recycled from old car tyres. That makes the ride a little harder than if the tyres were pneumatic(充气轮胎的), but means they cannot be punctured.
The chain is also made from car-tyre rubber. The pedals are plastic recycled from bottles and the brakes are recycled too, though Mr. Gafni is not yet ready to disclose the details. The finished product weighs 9kg, a bit less than an ordinary bike, and can carry a rider weighing 220kg.
Mr. Gafni’s target market is the poorer countries of the world. Because manufacturing the cardboard bike will, he reckons, cost $9-12 a unit, his design is far more affordable than a steel-framed bike. But people in rich countries may be interested too. In Tel Aviv, the commercial capital of Mr. Gafni’s native land, 2 000 stolen bikes were recently put on display by police, for their owners to claim. If bicycles cost less than the locks that chained them to lampposts, thieves might not think it worthwhile to steal them.
What is the competitive advantage of the cardboard bicycle?
选项
A、It is much lighter than a steel-framed bike.
B、It is so cheap that the thieves are uninterested.
C、It has specially designed anti-theft lock.
D、It can bear a unique look designed by its owner.
答案
B
解析
细节辨认题。由定位句可知,如果自行车比将其锁到路灯柱上的锁还要便宜的话,它也许就不值得偷了。因此B)“它太便宜,以至于小偷不屑于偷”正确。
转载请注明原文地址:https://kaotiyun.com/show/fpc7777K
0
大学英语四级
相关试题推荐
SpidersSpiderscanbedistinguishedfromotherArachnidsbecausetheprosoma(combinedheadandthorax)isonlyseparatedf
SpidersSpiderscanbedistinguishedfromotherArachnidsbecausetheprosoma(combinedheadandthorax)isonlyseparatedf
Howoldis"old"?Theanswerhaschangedovertheyears.Twohundredyearsago,youwereoldat35.Thatwastheaveragelifeex
Writingkeepsusintouchwithotherpeople.Wewritetocommunicatewithrelativesandfriends.Wewriteto【B1】______ourfamily
A、Helosthisfatherwhenhewasyoung.B、Heworkedhardbeforehereadhisfather’sletter.C、Heaskedhisfather’spermission
Thefirstbicyclesweremadeofwood.Cyclemanufacturersthenswitchedtosteeltubes.Thesedays,forhigh-endbikeswherewei
Thefirstbicyclesweremadeofwood.Cyclemanufacturersthenswitchedtosteeltubes.Thesedays,forhigh-endbikeswherewei
With10,600bicyclesincirculation,Pariscityofficialsarehopingtheprogramwillprovidepeoplewithmoreenvironmentallyf
随机试题
_______是债务人或第三人将其动产或者权利移交债权人占有,将该动产作为债权的担保,当债务人不履行债务时,债权人有权依法就该动产卖得价金优先受偿。
简述自由心证制度。(中南财大2005年研)
以下不属于鼓膜表面标志的是
A/省级药品监督管理部门B/省级工商行政管理部门C/县级以上工商行政管理部门D/县级以上药品监督管理部门E/县级以上质量技术监督部门药品广告审批机关是
制订工程项目风险应对计划的主要工作是()
设置在有爆炸危险场所内的气体灭火系统管网,应设()。
红色墨水只能在结账划线、改错、冲账时使用。()
从事生产、经营的纳税人,应当自领取营业执照之日起()日内,向生产、经营地或者纳税义务发生地的主管税务机关申报办理税务登记,如实填写税务登记表并按照税务机关的要求提供有关证件、资料。
Quickinform.comwillsoonintroduceanewfeature______userstoquicklyseethemostimportantdata.
A、Lossofcostumers.B、Ruinofthereputation.C、Dangeroflawsuits.D、Compensationcosts.C总结题,可以用排除法解答。选项A指失去客户;选项B指损害名誉;选项C指诉
最新回复
(
0
)