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
Pushbike Peril Low speed bicycle crashes can badly injure — or even kill — children if they fall onto the ends of the handlebars
Pushbike Peril Low speed bicycle crashes can badly injure — or even kill — children if they fall onto the ends of the handlebars
admin
2009-06-15
44
问题
Pushbike Peril
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 accidents. "The task was to identify how the injuries occurred and come up with some countermeasures," she says.
By interviewing the children and their parents, Arbogast and her team were able tog 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 a slow speed, causing them to topple over5. 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 abdomen6.
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.
选项
A、they are not noble enough.
B、they may kill children.
C、they are likely to crash.
D、they make the bike move at a low speed.
答案
B
解析
文章在开始处就讲,儿童骑慢车跌倒时,如果撞在车把两端,会受重伤甚至丧命。因此,一些工程师正在重新设计这种欠合理的车把,以使其更安全。前面是因,后面是果。“重新设计”意味着“试图改进”。
转载请注明原文地址:https://kaotiyun.com/show/Fq2d777K
本试题收录于:
职称英语卫生类基础题库职称英语分类
0
职称英语卫生类基础
职称英语
相关试题推荐
Readthefollowingstatement:Onlyunderofficiallawsoradministrativeregulationscanwedefendastableandreliableexa
Readthefollowingletterandcompletethegiveninformationform.Writeaword,phraseornumberinthespaces1-5.De
Therearemanydifferentreasonswhyfashionissuchapowerfulculturalandeconomicinfluenceindevelopedsocietiesatthebe
1.TheAmericanbabyboomafterthewarmadeunconvincingadvicetothepoorcountriesthattheyrestraintheirbirth.However,
1.TheAmericanbabyboomafterthewarmadeunconvincingadvicetothepoorcountriesthattheyrestraintheirbirth.However,
ItiscommonforAmericanstohavedifferent"circlesoffriends"suchaschurchfriends,workfriends,orsportsfriends.【R1】__
CarsaccountforhalftheoilconsumedintheU.S.,abouthalftheurbanpollutionandonefourththegreenhousegases.Theyta
CarsaccountforhalftheoilconsumedintheU.S.,abouthalftheurbanpollutionandonefourththegreenhousegases.Theyta
Playistheprincipalbusinessofchildhood,andinrecentyearsresearchhasshownthegreatimportanceofplayinthedevelopm
1.Workingparentsandteachersseeafter-schoolprogramsnolongerasoptional,butasanessentialsupportforchildrenasthe
随机试题
根据2013年修订发布的COSO《内部控制框架》,下列属于控制环境要素应当坚持的原则的有()。
光纤端面制备清洗用()。
最易引起心房颤动的疾病是()。
砌筑一砖厚砖墙,灰缝厚度为10mm,砖的施工损耗率为1.5%,场外运输损耗率为1%。砖的规格为240mm×115mm×53mm,则每m3砖墙工程中砖的定额消耗量为()块。
孙某与张某签订了一份种子买卖合同,下列()出现时,孙某可以依法终止合同。
戊公司是一家上市公司,为了综合分析上年度的经营业绩,公司董事会召开专门会议进行讨论。公司相关资料如下:资料一:戊公司资产负债表简表如表1所示:资料二:戊公司及行业标杆企业部分财务指标如表2所示(财务指标的计算如需
十六届四中全会审议通过的《中共中央关于加强党的执政能力建设的决定》指出,加强党的执政能力建设,必须坚持以()为核心。
下面过程输出记录集的记录个数。SubGetRecNum()DimrsAsObjectSetrs=Me.RecordsetMsgBox【】EndSub程序空包处【】应该填写的是
Anotherargumentwithhisboss______himthatheshouldfindanewjob.
IftheEuropeansthoughtadrought—alongperiodofdryweather—wassomethingthathappenedonlyinAfrica,theyknowbetternow
最新回复
(
0
)