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
63
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
Hereisapopularbeliefamongparentsthatschoolsarenolongerinterestedinspelling.Thisis,however,a【S1】______.Noscho
A、Whenyouhavesmallchildren.B、Whenyouliveinanapartment.C、Whenspaceislimited.D、Whenyouliveinthecity.C细节题。当你的住
A、Children.B、Family.C、Parents.D、ASPCA.C细节题。说话者认为父母才是最应该对小狗负责的人。从这句话中就可以看出来:theparentsaretheoneswhoarereallyresponsi
CaliforniaStateLawrequiresthatallbicycleridersunderage18wearprotectivehelmetswhenevertheyrideonpublicstreets
Beforeinvestingincommonstocks,oneshouldbeawareofboththeiradvantagesanddisadvantages.Oneadvantageistheirhighp
A、Itisasurvivaltechniqueforbabies.B、Itcaneasehostilitiesbetweenparentsandchildren.C、Itcanmakeparentsfellrela
A、Itisabookwrittenonlyforclassroomreading.B、Itisabookoneducation.C、Ithasavocabularyofonlytwohundredwords.
Inaddition,yourageandgeneralhealth______(起着重要的作用)whatandhowyoushouldeatinordertoloseweight.
Afterretiringfrom30yearsofteaching,EthbellPeppercouldeasilyhavedecidedtositbackand【B1】______andenjoyapeaceful
Afterretiringfrom30yearsofteaching,EthbellPeppercouldeasilyhavedecidedtositbackand【B1】______andenjoyapeaceful
随机试题
教学大纲和教科书的编写通常采用()和()两种方法。
A.A期B.B期C.C期D.C2期E.D期大肠癌癌肿已穿透肠壁,伴肠系膜动脉结扎处淋巴结转移,在Dukes分期中属于
关于腹痛与相关痛证的鉴别诊断,以下哪一项不正确
激素敏感脂肪酶是指
建设工程项目施工安全技术措施计划中的安全生产责任制度指的是()。
下列关于压力加工的叙述中,正确的是( )。
如果集团项目合伙人认为,由于集团管理层施加的限制,使集团项目组不能获取充分、适当的审计证据,由此产生的影响可能导致对集团财务报表发表无法表示意见,集团项目合伙人应当视具体情况采取下列()措施。
定义:①国家赔偿:是国家对公民、法人和其他组织因国家机关和国家机关工作人员违法行使职权行为致使其合法权益受到损害而给予赔偿的法律救济制度。②行政补偿:是国家对公民、法人和其他组织因行政机关和行政机关工作人员合法行使职权行为或因公共利益需要致其合法权益受
政府职能既要有稳定性,又要有发展性。()
A、Shewasattackedbyrobbers.B、Shewasstoppedbyapoliceman.C、Shewasforcedtoenteraflyingsaucer.D、Shefainteddueto
最新回复
(
0
)