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
2023-08-30
13
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 a11 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,property 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.
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
Why is there no jet traffic at Washington’s National Airport from 11 pm to 7 am?
转载请注明原文地址:https://tihaiku.com/zcyy/2969985.html
相关试题推荐
[originaltext]W:Youknow,I’veoftenwonderedwhypeoplelaughatthepicture
[originaltext]M:Thisweek,wewillansweraquestionfromafreshman,Erin.Er
[originaltext]M:Thisweek,wewillansweraquestionfromafreshman,Erin.Er
[originaltext]Youmayrememberthatafewweeksago,wediscussedthequest
[originaltext]Youmayrememberthatafewweeksago,wediscussedthequest
[originaltext]Youmayrememberthatafewweeksago,wediscussedthequest
[originaltext]Crocodilesonlylivewhereitishot.TheyarefoundinInd
[originaltext]Crocodilesonlylivewhereitishot.TheyarefoundinInd
[originaltext]M:Hey,Karen.LookslikeyougotsomesunthisWeekend.W:Yeah,
[originaltext]M:Hey,Karen.LookslikeyougotsomesunthisWeekend.W:Yeah,
随机试题
Acontractisanagreementbetweentwoormorepeopleinwhichonepersonagr
灌注桩的承载能力与施工方法有关,其承载力由低到高的顺序依次为( )。A、钻孔
设f(x)函数在[0,+∞)上连续,则f(x)是: A.xe-x B.xe
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
建立肾内髓部渗透压梯度的主要溶质是A.尿素和NaCl B.KCl和尿素 C
以下是某求助者的SCL-90的测验结果: 总分:214阴性项目数:28
导致市场机制不能实现资源最优配置的情形有()。A.市场过于分散 B.存在外部
布置在海拔高度2000m的220kV配电装置,其带电部分至接地部分之间最小安全距
根据《房屋建筑与装饰工程量计量规范》(GB50854—2013),关于砌墙工程量
计算现场签证费用时,对于完成其他非承包人责任引起的事件,相应的计算依据应当是(
最新回复
(
0
)