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
2024-04-14
49
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://tihaiku.com/zcyy/3554944.html
相关试题推荐
[originaltext]M;Whatdoyouthinkofthegovernment’snewtaxcutproposal?W:
[originaltext]M;Whatdoyouthinkofthegovernment’snewtaxcutproposal?W:
[originaltext]M;Whatdoyouthinkofthegovernment’snewtaxcutproposal?W:
[originaltext]M;Whatdoyouthinkofthegovernment’snewtaxcutproposal?W:
[originaltext]M;Whatdoyouthinkofthegovernment’snewtaxcutproposal?W:
[originaltext](19)Forgetmilkydrinks,hotwaterbottlesorcurlingupwit
[originaltext](19)Forgetmilkydrinks,hotwaterbottlesorcurlingupwit
[originaltext]W:Devon,IheardthatyoutookthetrainacrossRussia.M:Yes,(
[originaltext]W:Devon,IheardthatyoutookthetrainacrossRussia.M:Yes,(
[originaltext]Intoday’sthrow-awaysociety,dealingwiththecity’sgrowin
随机试题
Certainurbanproblemsarecommontobothdevelopedanddevelopingcountries,
Heiswaitingfortheairlineticketcounterwhenhefirstnoticestheyoungw
OnSundaystherearealotofchildrenplayinginthepark,______parentsseate
What’syourearliestchildhoodmemory?Canyourememberlearningtowalk?Or
《霓裳羽衣舞》是我国()代著名舞蹈作品。A.汉 B.唐 C.宋 D.元
患者,男性,40岁。酒宴后左上腹部剧烈疼痛6小时就诊。查体:病人急性病重面容、表
共用题干 Congratulations,ItWillBeABoy!
一个供电系统由两个无限大电源系统S1、S2供电,其短路电流设计时的等值电抗如题图
水利工程施工招标中,对于投标人项目经理的要求有()。A.必须有本单位注册的
不符合医师在执业活动中享有的权利的是A.获得与本人执业活动相当的医疗设备、基本条
最新回复
(
0
)