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
54
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
Throughouthistory,peoplehavebeenthevictimsofpickpockets.Today,pickpocketingisoneoftilemostrapidlyincreasingcri
A、She’sgoingtotheeyedoctor.B、She’ssupervisingnewemployees.C、She’shavingherdinnerinthecafeteria.D、She’slooking
A、Everyweekends.B、Frequently.C、Occasionally.D、Rarely.Ctheman说自从他妻子开始工作后,他决定时小时地在家帮忙做饭。故选C。
A、Whenyouhavesmallchildren.B、Whenyouliveinanapartment.C、Whenspaceislimited.D、Whenyouliveinthecity.C细节题。当你的住
CaliforniaStateLawrequiresthatallbicycleridersunderage18wearprotectivehelmetswhenevertheyrideonpublicstreets
A、Comfortableenvironment.B、Frequentvisitsbytheirchildren.C、Organizedentertainments.D、Humandignityandtherespectofo
Almost20,000whaleshavebeenslaughteredsincea【B1】______oncommercialwhalingwasintroducedin1986andthedeath【B2】______
AnEnglishschoolboywouldonlyaskhisfriend:"Wassatime,then?"Tohisteacherhewouldbemuchmorelikelytospeakinamo
A、Englishpeopleareprobablynotfriendlytostrangers.B、Englishpeoplearereserved.C、Englishpeopleareverystrange.D、Eng
随机试题
由于经济衰退而形成的失业属于()
A、Theycanbecomeshorterandthicker.B、Theycanstretch.C、Theyhavesenselinkingthemusclestothebrain.D、Theycanretrac
使用热水袋应注意
以下不属于在风景名胜区内禁止进行的活动是( )。
下列项目中,属于劳务报酬所得的是()。
根据《公司法》的规定,下列关于名义股东和实际出资人的说法正确的是()。
(2012年试题,三)设二维离散型随机变量X、Y的概率分布为求Cov(X—Y,Y)与ρxy.
下列说法正确的是()。
Unlikeanyotherscientifictopics,consciousness—thefirst-personawarenessoftheworldaround—istrulyintheeyeofbeholder
()双安全气囊()汽车保险()车速自控系统()动力方向盘装置
最新回复
(
0
)