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
32
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、form
B、affect
C、create
D、determine
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/KZhd777K
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?
Astormmoveddirectlyovertheisland,demolishingbuildingsandfloodingstreets.
Henrycannotresistthelureofdrugs.
CancerCancerisagroupofmanyrelateddiseasesthatbeginincells,thebody’sbasicbuildingblocks.Thebodyismadeup
Theministerapprovedthebuildingplansafterhediscussedwithotherministers.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
MindThoseMannersontheSubwaySo,thereyouare,justsittingthereinthesubwaycar,enjoyingthatbookyoujustbought.(4
随机试题
新生儿,出生3天,进行卡介苗的接种,其正确的部位及方法是
患者,男,40岁。右下8近中位阻生,右下7远中颈部可疑龋坏。现拟拔除右下8。在翻瓣去骨拔除阻生的右下8后3天,患者出现拔牙窝持续性疼痛,并向耳颞部放射。检查见拔牙窝内无血凝块,牙槽骨壁表面有灰白色假膜覆盖,有明显臭味。诊断应为
如图所示悬臂梁,其正确的弯矩图应是:
视频文件的扩展名可以为()。
据公安部统计数据显示,我国每年交通事故50万起,交通事故死亡人数均超过数万人,相当于一个小型县,居世界第一,每5分钟就有一个人丧身车轮,每1分钟都会有一人因为交通事故而伤残。对于事故的起因,应该说绝大多数的事故都并非当事人主观意愿,而是这个世界总是充满了太
简述学习与个体发展的关系。
无行为能力人在教育机构中受到人身损害的,适用何种归责原则()。
在Excel中,使用工作表中的数据建立图表后,改变工作表的内容时,______。
下列关于TCP协议特点的描述中,错误的是()。
数据字典(DD)所定义的对象都包含于
最新回复
(
0
)