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
43
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://jikaoti.com/ti/07OsFFFM
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
Whereisthenapkinnormallyplacedduringthemeal?Whichofthefollowingshowsgoodtablemanners?
Thetownisfamousforitsmagnificentbuildings
Henrycannotresistthelureofdrugs.
CancerCancerisagroupofmanyrelateddiseasesthatbeginincells,thebody’sbasicbuildingblocks.Thebodyismadeup
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
TableMannersandCustomsInGreatBritaintodaygoodmannersattableincludeeatingwiththemouthclosed;notlettingany
Thelittleboywassofascinatedbythemightyriverthathewouldspendhourssittingonitsbankandgazingatthepassingboa
随机试题
患者,男,24岁。反复发作性咳嗽,喘息10余年,再发加重3小时。查体:意识模糊,口唇发绀,双肺呼吸音明显减低,未闻及干、湿哕音,心率128次/分,可触及奇脉。为进一步明确诊断及判断病情程度,最有意义的检查是
简述良性竞争者和恶性竞争者的特点。
某纺织厂,滴虫性阴道炎发病率很高,为预防其传播,下列不必要的措施是
下列有关房屋权属登记的表述中,正确的有()。
我国个人所得税中工资、薪金所得的适用税率范围是()。
光纤:玻璃:塑料
1879年德国心理学家____________在莱比锡大学建立了世界上第一个心理学实验室,标志着科学心理学的正式诞生。
甲于2003年6月与乙合谋共同诈骗李某30000元,甲、乙平分各得15000元。在审理本案期间,甲主动交代曾在1997年3月间诈骗张某4000元的犯罪事实。在处罚甲诈骗罪时其犯罪金额应为()。
对考生文件夹下WORD.docx文档中的文字进行编辑、排版和保存,具体要求如下:【文档开始】《数据结构》教学实施意见一、课程的目的与要求《数据结构》课程是计算机应用专业一门重要的专业基础课,它的主要任务是讨论数据的各种逻辑结构、物理结构以及相关的算
It’sanannualback-to-schoolroutine.Onemorningyouwavegoodbye,andthatveryeveningyou’reburningthelate-nightoilw
最新回复
(
0
)