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
Singing Alarms Could Save the Blind If you cannot see, you may not be able to find your way out of a burning building - and tha
Singing Alarms Could Save the Blind If you cannot see, you may not be able to find your way out of a burning building - and tha
admin
2009-06-15
65
问题
Singing Alarms Could Save the Blind
If you cannot see, you may not be able to find your way out of a burning building - and that could be fatal. A company in Leeds could(51) all that with directional (定向的) sound alarms capable of guiding you to the exit.
Sound Alert, a company run(52) the University of Leeds, is installing the alarms in a residential home for(53) people in Sommerset and a resource centre for the blind in Cumbria. The alarms produce a(54) range of frequencies that enable the brain to(55) where the sound is coming from.
Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be(56) by humans. "It is a burst of white noise that people say sounds like static (静电噪音) on the radio," she says. "its life-saving potential is(57)."
She conducted an experiment in which people were filmed by thermal-imaging (热效应成像) cameras trying to find their(58) out of a large smoke-filled room. It(59) them nearly four minutes to find the door without a sound alarm,(60) only 15 seconds with one.
Withington studies how the brain(61) sounds at the university. She says that the(62) of a wide band of frequencies can be pinpointed (精确地确定) more easily than the source of a narrow band. Alarms(63) on the same concept have already been installed on emergency vehicles.
The alarms will also include rising or falling frequencies to(64) whether people should go up or down stairs. They were(65) with the aid of a large grant from British Nuclear Fuels.
选项
A、slow
B、deaf
C、blind
D、lame
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/zphd777K
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
CementwasseldomusedinbuildingduringtheMiddleAges.
Wecannotexistwithoutair,foodorwater.
Wecannotgoonquarrellinglikethis.
Henrycannotresistthelureofdrugs.
Thesefactorsinteractintimatelyandcannotbeseparated.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
TableMannersandCustomsInGreatBritaintodaygoodmannersattableincludeeatingwiththemouthclosed;notlettingany
TableMannersandCustomsInGreatBritaintodaygoodmannersattableincludeeatingwiththemouthclosed;notlettingany
GoodTableMannersMannersplayanimportantpartinmakingafavorableimpressionatthedinnertable.Herearesomegener
MindThoseMannersontheSubwaySo,thereyouare,justsittingthereinthesubwaycar,enjoyingthatbookyoujustbought.(4
随机试题
从1998年到2004年,美洲地区啤酒消费量占世界啤酒消费总量的比重()。
在3PE防腐生产时,涂敷环氧粉末至防腐层开始冷却,应确保熔结环氧涂层()完全。
正确组织会计凭证的传递,对于及时处理和登记经济业务,明确经济责任、实行会计监督具有重要作用。具体包括哪些?
中心性发绀可见于()
肝脏CT平扫见散在略高密度结节阴影,主要见于
全面质量管理的基本观点包括:质量第一的观点,以()为主的观点,为用户服务的观点和一切用数据说话。
甲公司申请取得一项土地使用权,已交纳土地出让金1000万元,并拟以此土地使用权与他人合资成立有限责任公司。根据甲公司向国土资源管理部门汇款的凭证、国有土地出让合同、股东出资确认函、国土资源管理部门收到款项的确认函及在3个月内向新设公司直接核发土地使用权证的
担任处(局)正职领导,最高警衔为()。
Cultureshockmightbecalledan【1】diseaseofpeoplewhohavebeensuddenly【2】abroad.Likemostailments,ithasitsown【3】andc
ANiceCupofTeaTheLegendaryOriginsofTeaA)ThestoryofteabeganinancientChinaover5,000yearsago.Accordingto
最新回复
(
0
)