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
46
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、change
B、cure
C、demand
D、set
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/ophd777K
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.
CallingforSafeCelebrations LastFourthofJuly,Pete,a14-year-oldboy,wasenjoyingthelit-upskiesandloudboomsfromthe
Wecannotexistwithoutair,foodorwater.
Shecannotanswerthisquestionatonce,butcanfindtheanswertoitfromthatbook.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
A.ifthereisn’tenoughdopamineinyourbodyB.whataffectsmusclesallthroughyourbodyC.whichcannotbecuredyetD.
TableMannersandCustomsInGreatBritaintodaygoodmannersattableincludeeatingwiththemouthclosed;notlettingany
TableMannersandCustomsInGreatBritaintodaygoodmannersattableincludeeatingwiththemouthclosed;notlettingany
随机试题
心衰病人心功能曲线位于正常人心功能曲线的哪一方向
A、Marquis反应B、绿奎宁反应C、Vitaili反应D、双缩脲反应盐酸吗啡的特征鉴别反应为( )。
某项目初始投资1000元,年利率8%,期限为1年,每季度付息一次。按复利计算则其1年后本息和为()元。
汇率贴水的含义是()。
下列选项中,说法不正确的有()。
下列表述中正确的是()。
使用VC++2010打开考生文件夹下modi1中的解决方案。此解决方案的项目中包含一个源程序文件modi1.c。在此程序中,fun函数的功能是:在任意给定的N个正整数中,从左到右依次逐个取三个数作为一组,按值大小找出该组数的中值,用该中值替换与该组数对应的
小胡利用Excel对销售人员的销售额进行统计,销售工作表中已包含每位销售人员对应的产品销量,且产品销售单价为308元,计算每位销售人员销售额的最优操作方法是:
Whoisthemanworkingwith?
Onedayapoliceofficermanagedtogetsomefreshmushrooms.Hewassopleased【C1】______whathehadboughtthathe【C2】______
最新回复
(
0
)