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、life
B、way
C、method
D、skill
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/pZhd777K
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
Thetownisfamousforitsmagnificentbuildings
Henrycannotresistthelureofdrugs.
Astormmoveddirectlyovertheisland,demolishingbuildingsandfloodingstreets.
Shecannotanswerthisquestionatonce,butcanfindtheanswertoitfromthatbook.
Wecannotgoonquarrellinglikethis.
Henrycannotresistthelureofdrugs.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
GoodTableMannersMannersplayanimportantpartinmakingafavorableimpressionatthedinnertable.Herearesomegener
随机试题
A.肝破裂B.脾破裂C.胰腺挫伤断裂D.十二指肠断裂E.结肠破裂间断横向缝合
AirportbaggagescreenersintheUSA,displayingseizedchainsaws,machetesandknives,【21】travelerstochecktheirluggagefor
气虚湿阻型股肿治疗宜选用
根据工业区位理论,下列描述正确的是()。
综合信息管理组的主要任务是负责本施工项目实施过程中的信息管理,其内容包括( )。项目竣工验收信息主要包括( )。
下列关于质押与抵押区别的表述中,错误的是()。
根据《民事诉讼法》的规定,当事人不服人民法院第一审判决的,有权在法定期限内向上一级人民法院提起上诉,该法定期限是指()。
最近石家庄市的大街上出现了环保型出租专用车,该车采用PLG+汽油的双燃料系统,其尾气中有害气体的成分较普通车型下降了80%左右,解决了汽车尾气排放给城市造成的污染问题。下列物质中不属于上述有害气体的是()。
设z=z(x,y)满足方程2z-ez+2xy=3且z(1,2)=0,则dz|(1,2)=_______.
ThereisgrowinginterestinEastJapanRailwayCo.ltd.,oneofthesixcompanies,createdoutoftheprivatizednationalrailw
最新回复
(
0
)