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
Low speed bicycle crashes can badly injure—or even kill—children if they fall onto the ends of the handlebars. So a team of engi
Low speed bicycle crashes can badly injure—or even kill—children if they fall onto the ends of the handlebars. So a team of engi
admin
2010-10-14
59
问题
Low speed bicycle crashes can badly injure—or even kill—children if they fall onto the ends of the handlebars. So a team of engineers is redesigning the humble handlebar in a bid to make it safer.
Kristy Arbogast, a bioengineer at the Children’s Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed that more than a third were caused by bicycle a accidents. "The task was to identify how the in juries occurred and come up with some countermeasures," she says.
By interviewing the children and their parents, Arbogast and her team were able to reconstruct many of the accidents and identified a common mechanism responsible for serious injuries. They discovered that most occur when children hit an obstacle at slow speed, causing them to topple over. To maintain their balance they turn the handlebars through 90 degrees—but their momentum forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen.
The solution the group came up with is a handgrip fitted with a spring and damping system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact. The group hopes to commercialize the device, which should add only a few dollars to the cost of a bike. "But our task has been one of education because up until now, bicycle manufacturers were unaware of the problem, says Arbogast.
The team has also approached the US Consumer Product Safety Commission to try to persuade manufacturers to adopt the new design. A decision is expected later this year.
0. What is the main idea of Paragraph 3?
选项
答案
How serious injuries occur.
解析
转载请注明原文地址:https://kaotiyun.com/show/Qw87777K
0
大学英语四级
相关试题推荐
TodayAmericanparentsarefindingthemselvesinadilemmaabouthowtodealwithteenagedrinking,aserioussocialproblem.A
A、Itisnotsafeforthechildren.B、Thechildrencannotcommunicatewithmothersfacetoface.C、Themothersmayfeelverytir
Hereisapopularbeliefamongparentsthatschoolsarenolongerinterestedinspelling.Thisis,however,a【S1】______.Noscho
CaliforniaStateLawrequiresthatallbicycleridersunderage18wearprotectivehelmetswhenevertheyrideonpublicstreets
Beforeinvestingincommonstocks,oneshouldbeawareofboththeiradvantagesanddisadvantages.Oneadvantageistheirhighp
AnEnglishschoolboywouldonlyaskhisfriend:"Wassatime,then?"Tohisteacherhewouldbemuchmorelikelytospeakinamo
A、Theyshouldhelpmaintaintheequipment.B、Theyshouldkeepawatchfuleyeontheirchildren.C、Theyshouldstoptheirchildre
A、Childrendon’tgetenougheducationinsafety.B、Childrenarekeenondangerousgames.C、Theplaygroundsareinpoorcondition
A、AnewEnglishLanguageexaminationtestingfourdifferentskills.B、AnexaminationtestingReading,Writing,ListeningandSpe
Peoplefeeluneasyaboutthatmurder(上周从监狱逃跑)andisstillatlarge.
随机试题
肿块合并肺不张时,增强扫描的目的是为了:()
药物避孕的适应证是
关于胃的描述正确的是
关于酶的叙述正确的是
苓甘五味姜辛汤和小青龙汤具有相同的功用是
下列不属于重度烧伤的辨证分型的是
当我们在承受某些心理痛苦——比如孤独、社会孤立、自我怀疑、负面情绪、觉得人生无意义时.怀旧可以起到应对机制的作用。这些烦恼使大脑开始筛选自己的记忆库,总结出一些有特定叙事特色的片段。我们通过怀旧,让过去的成功经历和亲密的人际关系重新浮出水面,那些时候我们的
某公司有甲、乙、丙三个部门,共有职工60人,已知甲部门职工人数比乙部门少6人,乙部门职工人数比丙部门少6人,问丙部门有多少职工?
1949年3月5日至13日,中国共产党在西柏坡村举行了七届二中全会。在会上,毛泽东所提出的关于党的作风建设的要求是
•Readthearticlebelowaboutasuccessfulbusinessman.•Foreachquestion(23-28)belowthearticle,choosethecorrectansw
最新回复
(
0
)