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
The controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually lo
The controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually lo
admin
2010-01-07
73
问题
The controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually loud. A late-model jumbo 747, for example, creates 100 or more decibels of sound over an eight-square-kilometer area. The Concorde spreads a 100-decibel-plus blanket of noise over some 140 square kilometers. On takeoff, the Concorde sounds like four F-4 fighter jets taking off at once. Its penetrating, low-frequency rumble makes the Concorde "completely distinctive" from other jets.
What bothers noise experts is that plenty of commonplace machines are just as loud as, or even louder than, the Concorde. A sanitation truck can be noisier, and so can a heavy diesel truck pulling away from a stop sign. One expert who has gone out of his way to dramatize the prevalent offensiveness of the city sound-scale is Dr. Thomas H. Fay, director of speech and hearing at Columbia-Presbyterian Medical Center in New York. Dr. Fay took a sound-meter into a New York City subway and proved that an approaching train can be twice as loud as the Concorde.
Since World War Ⅱ, the number of the high-powered noise-makers, from trucks and motorcycles to air conditioners and sirens has increased almost geometrically. It’ s no wonder that in many areas of the country, especially in the suburbs, the average sound level has doubled in 20 years. Noise experts estimate that city noises are increasing a half-decibel a year. They found that in 1971 the quietest parts of Los Angeles--thought to be a relatively quiet city--were louder than the loudest districts of New York in 1937.
The Concorde is completely distinctive from other jets in that it ______ .
选项
A、flies with a large blanket
B、is as powerful as four F-4 fighter jets
C、produces low-level noise
D、is unusually loud
答案
D
解析
本题为细节判断题,英法联合制造的协和式飞机与众不同的特征就是噪音异常地大。
转载请注明原文地址:https://kaotiyun.com/show/JrPd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Whenitcomestotheslowingeconomy,EllenSperoisn’tbitinghernailsjustyet.Butthe47-year-oldmanicuristisn’tcutting,
Themostobviouspurposeofadvertisingistoinformtheconsumerofavailableproductsorservices.Thesecond【31】______istos
Accordingtothespeaker,whatareconveniencegoods?
Allthatfault-findingaboutloweringcholesterolandeatinglessfatmustfinallybepayingoff.Accordingtoastudypublished
A=TheRoleofaTeacherB=TheTaskofaTeacherC=AGoodTeacherInwhichpassage...TheRoleofaTeacherTeach
Malelionsareratherreticentaboutexpendingtheirenergyinhunting—morethanthree-quartersofkillsaremadebylionesses.
Wheredidriceoriginate?
Wheredidriceoriginate?
Wheredidriceoriginate?
Inthe18thcentury,NewYorkwassmallerthanPhiladelphiaandBoston.TodayitisthelargestcityinAmerica.Howtoexplain
随机试题
A.技术控制、质量控制、资金控制、人力资源控制B.日常控制、定期控制C.专题控制、专项控制、全面控制D.间接控制、直接控制E.前馈控制、同期控制、反馈控制按管理者控制和改进工作的方式不同,控制可以分为
下列哪种情况常有震颤
机械排烟可分为________。
职业性危害因素是指()。
对于气焊焊口采用的热处理方法是( )。
下列法律中,明确确定“中华人民共和国公民有依照法律纳税的义务”的是()。(2009年)
王某在电脑公司购买一台电脑,使用10个月后出现故障;在“三包”有效期内,经两次修理仍无法正常使用。此时市场上已无同型号电脑。依照有关法律规定,该事件应如何解决?()。
注意事项1.本题本由给定资料与作答要求两部分构成。考试时限为150分钟。其中,阅读给定资料参考时限为40分钟,作答参考时限为110分钟。满分150分。2.监考人员宣布考试开始时,你才可以开始答题。3.请在题本、答题卡指定位置填写自己的姓名,填涂准考证
“极点”产生早晚与( )
下列ASCII码中,最大的是
最新回复
(
0
)