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
A、It might increase airport capacity. B、It might lower property values. C、It might lead to effective modification of existing je
A、It might increase airport capacity. B、It might lower property values. C、It might lead to effective modification of existing je
admin
2013-06-02
19
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 might increase airport capacity.
B、It might lower property values.
C、It might lead to effective modification of existing jet engines.
D、It might cause more transportation costs to and from airports.
答案
A
解析
What result might noise reduction cause according to the speaker?
转载请注明原文地址:https://kaotiyun.com/show/N767777K
0
大学英语六级
相关试题推荐
A、Inastudio.B、Inastore.C、Atthefashionshow.D、Atthepark.AWheredoesthistalkmostprobablytakeplace?四个选项都是关于地点,由此
A、Hemadeithimself.B、Hehadacarpentermakeit.C、Heboughtit.alongtimeago.D、Hehadanoldonere-made.B从男士的回答中可找到答案。
Atlastsheleftherhouseandgottotheairport,______(不料却看到飞机正起飞).
A、Withtheirfather.B、Withtheirmother.C、Withtheirgrandparents.D、Partofthetimewithmother,partwithfather.B选项均为With
A、Howtoincreaseone’sspeedinabicyclerace.B、MajorCanadianbicycleraces.C、Thecontributionofcyclingevent.D、Anannua
Americansthisyearwillswallow15,000tonsofaspirin(阿司匹林),oneofsafestandmosteffectivedrugsinventedbyman.Themost
Americansthisyearwillswallow15,000tonsofaspirin(阿司匹林),oneofsafestandmosteffectivedrugsinventedbyman.Themost
Manlivesincommunities.Hissocialexistencerestrictshis【B1】______incertaindirectionsandextendsitinothers.Society【B
Manlivesincommunities.Hissocialexistencerestrictshis【B1】______incertaindirectionsandextendsitinothers.Society【B
随机试题
心脏收缩力增强时,静脉回心血量增加,这主要是因为
具有温肾阳,温脾阳,温通血脉,引火归原功效的药物是()
关于第三心音,正确的描述是()
为降低苍耳子对肝脏的损害,需要的炮制方法是()。
关于我国刑事诉讼中起诉与审判的关系,下列哪一选项是正确的?(2015年卷二36题)
拉伯雷认为“笑是人的本质”,他在《巨人传》里让他的人物_______地狂笑,许多虚伪沉痛、道貌岸然的价值观在笑声里_______。填入划横线部分最恰当的一项是:
已知=x+2y+3,u(0,0)=1,求u(x,y)及u(x,y)的极值,并问此极值是极大值还是极小值?说明理由.
StevenP.Jobs,whoseinsistentvisionthatheknewwhatconsumerswantedmadeAppleoneoftheworld’smostvaluableandinflue
Employeestodayworkshorterhoursbuttakelongervacationthanin1979.
AmongthefirsttocomeandliveinNorthAmerica______,wholaterprosperedmainlyinNewEngland.
最新回复
(
0
)