首页
登录
职称英语
[originaltext] [11] The economic costs of noise to society are several. [9]
[originaltext] [11] The economic costs of noise to society are several. [9]
游客
2023-08-05
60
管理
问题
[11] The economic costs of noise to society are several. [9] 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.
[10] /[11] If all aircraft were made quieter by existing methods, there would be a number of economic benefits. [10] 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.
[11] 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.
9. Why is there no jet traffic at Washington’s National Airport from 11 pm to 7 am?
10. What result might noise reduction cause according to the speaker?
11. 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
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/2900022.html
相关试题推荐
[originaltext]Insectsanddiseasesthatattackfoodcropsaremovingasris
[originaltext]Insectsanddiseasesthatattackfoodcropsaremovingasris
[originaltext]StudentsinAmericanschoolslearnfromanearlyagetogive
[originaltext]StudentsinAmericanschoolslearnfromanearlyagetogive
[originaltext]Thefirstyearofcollegeisoneofthebestandthemostint
[originaltext]Supposesomeoneinventedagiftcardsoversatilethatitcou
[originaltext]Supposesomeoneinventedagiftcardsoversatilethatitcou
[originaltext]Whencaughtinpouringrainwithoutanumbrella,mostpeople
[originaltext]M:Shakinganinfantoutofangerorfrustrationcanleadto
[originaltext]M:Shakinganinfantoutofangerorfrustrationcanleadto
随机试题
TheholeinthestratosphericozonelayeroverAntarcticadidnotgrowasfastt
Hewasaskedtospeaklouder______allth
善祛经络风痰的是A.白芥子B.天南星C.紫菀D.昆布E.半夏
2008年第一季度,某国的外汇储备为1000亿美元,第二季度又增长了17%,第三
根据《城乡规划法》和行政法学知识判断下列说法中错误的是()。A.《城乡规划
行动研究法
甲公司单位负责人高某,对依法履行职责的会计人员赵某打击报复,情节恶劣,构成犯罪,
某火电厂装设600MW机组2台,动力中心为单母线接线;锅炉低压变压器380V/2
普通混凝土路面施工完毕并经养护后,在混凝土达到设计( )强度的40%以后,允许
运用工程网络计划的方法编制进度计划,有利于实现进度控制的科学化,其表现为()。
最新回复
(
0
)