首页
登录
职称英语
[originaltext] The economic costs of noise to society are several. Airports
[originaltext] The economic costs of noise to society are several. Airports
游客
2023-08-19
24
管理
问题
The economic costs of noise to society are several. Airports are currently operating at less capacity because of noise regulations which restrict their hours of operation. For instance, at Washington’s National Airport jet traffic is not allowed from 11 pm to 7 am. Other airports restrict the use of certain runways. One estimate is that noise restrictions reduce possible airport use by 20 percent. The profitable cargo trade is especially affected by night restrictions.
In the case of airports, jet engines may be modified to reduce their noise level. One estimate is that $5.7 billion would be required to equip all existing jet engines with noise control devices. However, even taking this step will not reduce noise levels at all points to acceptable values. Some combination of methods is probably necessary.
If all aircraft were made quieter by existing methods, there would be a number of economic benefits. An increase in airport capacity would occur. Property values near airports might rise. Transportation costs to and from airports could be reduced since the airports now could be located closer to population centers.
Much research still needs to be done on the economic aspects of noise reduction and noise effects. Although some of the effects of noise pollution are known, more must be discovered about its effects on health, productivity, properly values and the quality of life. Furthermore, the cost of noise pollution to the economy as a whole needs to be investigated. The public must be alerted to the dangers and economic costs of noise pollution so that people may make intelligent choices and exert appropriate pressures.
19. Why is there no jet traffic at Washington’s National Airport from 11 pm to 7 am?
20. What result might noise reduction cause according to the speaker?
21. What is the passage mainly about?
选项
A、It is extremely dangerous to fly in the dark.
B、Noise regulations restrict the hours of airport operation
C、Some of its runways are not in good condition.
D、Cargo planes produce more disturbing noises at night
答案
B
解析
细节题。短文开头提到,由于噪音控制条例限制飞机运作时间,现今机场在以较低的容纳量运作,比如,华盛顿国家机场就规定从晚上11点到次日凌晨7点禁止飞机起降。由此可知,B为正确答案。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2938682.html
相关试题推荐
[originaltext]WhenMidoriwastwoyearsold,sheoftenclimbedontothepia
[originaltext]WhenMidoriwastwoyearsold,sheoftenclimbedontothepia
[originaltext]Theprivatemotorvehiclehasgivenusafreedomourancestor
[originaltext]Theprivatemotorvehiclehasgivenusafreedomourancestor
[originaltext]ForaverylongtimeAmericahasledtheworldinhighereduc
[originaltext]W:2millionhighschoolseniorsaregearingupthisfalltoappl
[originaltext]W:2millionhighschoolseniorsaregearingupthisfalltoappl
[originaltext]W:2millionhighschoolseniorsaregearingupthisfalltoappl
[originaltext]W:Whatareyouscratchingyourheadfor?M:I’vebeenrackingmy
[originaltext]W:Whatareyouscratchingyourheadfor?M:I’vebeenrackingmy
随机试题
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Lastweektwoengineers______tohelpsolvethetechnicalproblemsoftheproje
MassProduction:MethodandImpactP1:EvenwiththeearlysuccessesinEurope,
患者,男,35岁。患1型糖尿病,行胰岛素强化治疗,糖化血红蛋白6.0%。晨起,家
《义务教育数学课程标准(2011年版)》中课程内容的四个部分是()。A、数与代
常见的药材害虫不包括A.谷象、米象 B.大谷盗、赤拟谷盗 C.药谷盗、锯谷盗
下列关于风险的表述中,错误的是( )。A:利率变动属于政策风险 B:佣金浮动
在培训中使用的印刷材料具备很多优点。下列选项中,不属于其优点的是( )A.最常
关于合同的效力,下列说法正确的是()。A、显失公平的合同为无效合同B、如合同欠
以下属于商业银行经营管理的流动性原则含义的有()。A.取得现款的能力 B
最新回复
(
0
)