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 Danger Low speed bicycle crashes can badly injure -- or even kill -- children if they fall onto the ends of the handle
Pushbike Danger Low speed bicycle crashes can badly injure -- or even kill -- children if they fall onto the ends of the handle
admin
2012-09-10
29
问题
Pushbike Danger
Low speed bicycle crashes can badly injure -- or even kill -- children if they fall onto the ends of the handlebars (车把). So a team of engineers is redesigning it to make it safer.
Kristy Arbogast, a bioengineer at the Children’s Hospital of Philadelphia in Pennsylvania, began the project with her colleagues. The cases they reviewed about serious abdominal (腹部的) 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 to reconstruct many of the accidents and identified a common cause for serious injuries. They discovered that most cases occur when children hit an obstacle at slow speed, causing them to topple (摇摆) over. To maintain their balance the children turn the handlebars through 90 degrees -- but their momentum (冲力) forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, pushing it into their abdomen (腹部).
The solution the group came up with is a handgrip (握柄) fitted with a spring and damping (减速) system. The spring absorbs up to 50 per cent of the forces transmitted (传递) 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.
选项
A、they are not beautiful.
B、they may kill children.
C、they are likely to crash.
D、they affect the speed of the bike.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/qmQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
EbolaOutbreak1YouarelikelyawarethatseveralcountriesinWestAfricaarebattlinganEbolaoutbreak.Ebolaisadangerous
FriendlyRelationswiththePeopleAround1Youdependonallthepeoplecloselyaroundtogiveyouthewarmfeelingofbelongin
AsheisgoingtoworkinHollandfortwoyears,hewillbepartedfromhistwochildren.
FortyMayBetheNew30AsScientistsRedefineAgeIs40reallythenew30?Inmanywayspeopletodayactyoungerthantheir
A.BreakthenewsascalmlyaspossibletochildrenB.BreakthenewsatyourownpaceC.Sharethegoodnewswithyourfriends
Thewayonelooks,talksandmovesdependsMedal’stheoriesonheredity
FriendlyRelationswiththePeopleAround1.Youdependonallthepeoplecloselyaroundtogiveyouthewarmfeelingofbelongi
ASpecialClockEverylivingthinghaswhatscientistscallabiologicalclockthatcontrolsbehavior.Thebiologicalclock(5
随机试题
表格外观主要是()的选择。
《张中丞传后叙》中,写张巡“就戮”时,“颜色不乱,阳阳如平常”,这里所表现的他的性格特征是
Inthisageofequality,samenessbetweenthesexesisemphasizedasifdifferenceshavetomeanproblems.Well,differencescan
医院获得性肺炎最常见的致病菌是
患者男,29岁。车祸致张力性气胸,行胸腔闭式引流,观察发现引流瓶水柱上下波动。病人翻身时引流管从胸壁脱出,护士应立即
配电设计中通常采用()时间的最大平均负荷作为按发热条件选择电器或导体的依据。
下列叙述不正确的是()。
Happinessisforeveryone,andyoudon’tneedtocareaboutthosepeoplewhohavebeautifulhouses【C1】________largegardensand
定义应用需求的原型生命周期应是一个迭代过程,而其迭代工作量主要集中在______。
Poetrycanbecomparedtopainting.Whenyoulookataworkofart,youfirstseeitforwhatitis—adepictionofaperson,an
最新回复
(
0
)