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
69
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、to
B、along
C、by
D、with
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/sphd777K
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
GoodTableMannersMannersplayanimportantpartinmakingafavorableimpressionatthedinnertable.Herearesomegener
CallingforSafeCelebrations LastFourthofJuly,Pete,a14-year-oldboy,wasenjoyingthelit-upskiesandloudboomsfromthe
Shecannotanswerthisquestionatonce,butcanfindtheanswertoitfromthatbook.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
TableMannersandCustomsInGreatBritaintodaygoodmannersattableincludeeatingwiththemouthclosed;notlettingany
TableMannersandCustomsInGreatBritaintodaygoodmannersattableincludeeatingwiththemouthclosed;notlettingany
随机试题
试述《牡丹亭》中杜丽娘的形象。
女性,32岁,突然尿频、尿急、尿痛,排尿困难,偶有排尿中断且有终末血尿,初步诊断为
心理医生通过自由联想来收集资料,运用医患关系、追溯童年经历和梦析等方法,从不同的角度去解析早年的问题是如何反映在当前面临的心理问题中,通过人格的改变和从童年的压抑中解脱来达到改善精神症状的治疗效果。
补体
米非司酮的作用机制是()。
下列关于单位人民币卡结算使用的表述中,不符合法律规定的有()。
关于《对外贸易法》适用范围的说法,不正确的是()。
纳税人发生下列情形的,应办理变更税务登记的有()。
无论当下的生活多么衣食无忧,中国人还是爱假想将来可能遇到的______,即使这些真正发生的机率接近于零。这只能从中国人______的传统心理方面进行解释。
[*]
最新回复
(
0
)