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
53
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、Hespentalmostallhismoney.B、Hedidn’tlivewithhisbrother.C、Hedidn’thaveanyscholarship.D、Hesavedalargesumof
SincetheautoisthemainsourceoftravelinAmericaanddistancesbetweenmajorcitiesarefar,acommonwayofgettingaroun
A、Whenyouhavesmallchildren.B、Whenyouliveinanapartment.C、Whenspaceislimited.D、Whenyouliveinthecity.C细节题。当你的住
CaliforniaStateLawrequiresthatallbicycleridersunderage18wearprotectivehelmetswhenevertheyrideonpublicstreets
CaliforniaStateLawrequiresthatallbicycleridersunderage18wearprotectivehelmetswhenevertheyrideonpublicstreets
Beforeinvestingincommonstocks,oneshouldbeawareofboththeiradvantagesanddisadvantages.Oneadvantageistheirhighp
A、Theperformancerequiredforacertainjob.B、Therequiredbehavior,knowledgeandskills.C、Thetrainingcontentsandmethods
IfonlyI___________(有更多的时间)tothinkaboutit.
随机试题
A.肝浊音区上升,肝区叩痛阴性B.肝浊音区下降,肝区叩痛阴性C.肝区叩诊鼓音,肝区叩痛阴性D.肝绝对浊音界下移,肝区叩痛阴性E.肝浊音区上升,肝区叩痛阳性肺气肿()
动脉瘤样骨囊肿的特点
关于肝硬化食管静脉曲张破裂大出血后发生的变化,不正确的是()
下列不属于蒺藜功效的是
监理规划应针对项目的实际情况,明确监理工作目标,(),并具有可操作性。
根据《企业破产法》的规定,债权人会议应在()时召开。
某中外合资经营企业的注册资本为200万美元,中国合营者的出资比例为60%,外国合营者的出资比例为40%,双方约定分期缴付出资。其中,外国合营者第一期出资不得低于()。
以下哪项属于普通高中语文课程的基本理念?()
根据《民法总则》规定,下列行为可以撤销的有()。
A、Teachersshouldbetrainedforthesamemodel.B、Itdoesn’tsatisfytheneedofeverystudent.C、Itwillhaveanadverseeffec
最新回复
(
0
)