首页
登录
职称英语
[originaltext] [31] The economic costs of noise to society are several. [29
[originaltext] [31] The economic costs of noise to society are several. [29
游客
2023-09-08
82
管理
问题
[31] The economic costs of noise to society are several. [29] 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.
[30]/[31]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.
[31] Much research still needs to be done on the economic aspects of noise reduction and noise effects. Al though 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、The effects of noise on the quality of life.
B、The role of air traffic restrictions.
C、The production of quieter engines.
D、The economic aspects of noise reduction.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2995724.html
相关试题推荐
[originaltext]Inaway,allofusareonaspaceship,theplanetEarth.We
[originaltext]Inaway,allofusareonaspaceship,theplanetEarth.We
[originaltext]Inaway,allofusareonaspaceship,theplanetEarth.We
[originaltext]Oneofthereasonsforoursuccessasaspeciesisourabilit
[originaltext]M:Thinkaboutit,Mary.Throughtelecommunicationinformationtr
[originaltext]M:Thinkaboutit,Mary.Throughtelecommunicationinformationtr
[originaltext]W:HowwasyourtriptotheGrandCanyon?M:Itwasexcellent!We
[originaltext]W:Areyousureyou’vecorrectedallthetypingerrorsinthispa
[originaltext]W:Areyousureyou’vecorrectedallthetypingerrorsinthispa
[originaltext]W:Areyousureyou’vecorrectedallthetypingerrorsinthispa
随机试题
Recoveryfromjetlagcantakeaslongasadayforeverytimezonecrossed.
[audioFiles]2016m4x/audio_ezfj_307_20164[/audioFiles]E
[audioFiles]audio_eusm_j01_302(20099)[/audioFiles]A、Torunintoeachother.B、T
某公司2019年利润总额为1200万,利息费用为150万,则利息保障倍数为( )
长期应用可引起低血钾的降压药是A、利舍平 B、哌唑嗪 C、硝苯地平 D、氢
共用题干 第二篇AntsHaveBigImpactonEnviron
脂酰CoA经β氧化循环生成乙酰CoA不需要的酶是A.硫激酶 B.脂酰CoA脱氢
上市公司信息披露事务管理制度应当经公司董事会审议通过,报()备案。A:中国证监会
在项目策划之初就应充分考虑到在项目实施过程中可能会遇到的各种变化因素,这是(
我国孕产妇死亡的第一位原因为A.妊娠合并心脏病 B.妊娠高血压综合征 C.羊
最新回复
(
0
)