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
Collision between an aircraft and one or more birds is termed a bird-strike. Pilots sometimes record a birdstrike while at cruis
Collision between an aircraft and one or more birds is termed a bird-strike. Pilots sometimes record a birdstrike while at cruis
admin
2013-02-03
34
问题
Collision between an aircraft and one or more birds is termed a bird-strike. Pilots sometimes record a birdstrike while at cruising altitudes, but most of them happen when an aircraft is relatively close to the ground, usually in proximity to an airport and during the circling, descent to land or take-off phases of a flight.
Bird-strikes may cause significant damage to an aircraft and/or, if the birds are ingested into a jet engine, a significant and sudden loss of power. If this were to happen during take-off or initial climb of a fully loaded passenger aircraft the results could be catastrophic—loss of the aircraft and the lives of those on board. Any bird is a potential hazard to aircraft and this is especially true as bird numbers and bird size increase.
Unfortunately airports themselves can be attractive to birds-rodents, insects and other small animals are a food source often found in flat grassed areas such as the runway strips. Even so, this problem can be reduced by careful habitat management or bird harassment techniques practised by airport maintenance and safety personnel.
Further problems may arise because the airport is located on bird migration routes. These may have existed prior to the airport site selection—but may not have been taken into account because the problem was not understood at the time—or have only been recently established because the birds have found an attractive new food source. Care needs to be taken by local authorities in deciding the location of rubbish tips, or when permitting other land uses that may be attractive to birds in this way. Of course these effects cannot always be anticipated with certainty since birds such as gulls have been recorded as travelling 50 kilometres or more from their roosting area to an attractive food source.
Agricultural uses may be thought desirable because they are compatible with high levels of noise exposure, but they can have an adverse effect on air-craft operations if birds are attracted during seeding or crop cultivation. Birds may also be attracted to pig farms where garbage is used as fodder. Even tree plantings can present a hazard if the species provides an attractive food source or nesting habitat.
Local authority planning schemes often apply strict controls on developments such as abattoirs, cattle feed lots, grain handling, piggeries, canals and marina developments, fish farms, and suchlike. In most cases these uses will not be permitted without a full environmental study. That study should be required to deal with the question of likely bird hazards if the proposed location is in proximity to an airport.
In some instances it may be necessary to consider ways of managing a particular land use in order to reduce its attractiveness to birds, for example the adoption of land-fill measures at garbage tips, or enclosed rather than open-air activity. Specialist ornithological opinion may be necessary. In such cases it may not be possible to implement immediate changes in land use, but this should not inhibit the adoption of long-term measures which are designed to achieve this.
Summary:
A collision between an aircraft and one or more birds is known as a birdstrike. It usually happens when an aircraft is【71】, and may result in significant damage of the aircraft or loss of the aircraft and【72】of passengers and crew if they occur during take-off or initial climb. Because birds can find plenty food in flat grassed areas, airports are especially attractive to birds. However, the danger can be minimized by【73】. Local authorities need to take care when deciding on【74】It is suggested that a full environmental study should be made before making plans of developments on the land in proximity to an airport. Local authorities should get advice from specialists and take【75】in order to bring about changes in land use.
选项
答案
careful habitat management/bird harassment techniques
解析
机场往往会成为鸟儿最喜欢的地方,因为他们可以来这觅食,所以为了防止事故的发生,机场的负责人员应该采取生境管理政策或是设置一些防鸟的工具。
转载请注明原文地址:https://jikaoti.com/ti/bBlMFFFM
本试题收录于:
A类竞赛(研究生)题库大学生英语竞赛(NECCS)分类
0
A类竞赛(研究生)
大学生英语竞赛(NECCS)
相关试题推荐
Whenyouopenthebusinesssectionofanynewspaperattheendoftheyear,allthereportsseemtobeaboutresultsforthefis
SeveralresearchgroupsintheUnitedStatesareconductinggeneticresearchaimedatretardingaging.Ifthebreakthroughsofr
Althoughfewwoulddenythatit’sbettertoberichthanpoor,forsomepeoplethequestformoneyissoall-consumingthatite
Accordingtoofficialstatistics,retailsalesinChinarose10%and12.2%inthefirstandthesecondquarter______thisyear.
Underwhatagecan’tchildrenshootadvertisement?
Whilemanypeoplemayrefertoup-to-minutenews,itisunlikelythattelevisionandtheInternet_________thenewspaperscompl
Companiessaythatinmanycases,thebenefitsofforeign-languageknowledgecanlieoutsidethespecificrealmofbusiness.That
Australiais【21】driestcontinentinthisworld.TheevaporationrateofrainfallinAustraliais【22】.Thereasonforrapid
旅游是全球经济中一个快速增长的领域。【T1】因而发展中国家正努力从这一产业中获利,以促进海外投资、增加金融储备。(cashinon)联合国一方面承认,该产业的无序发展会造成严重的环境和社会问题,另一方面却坚持认为这些负面影响可以得到控制和减小。最近我在
【T1】我要跟你讲讲文学是什么!不——只是但愿能做到,可实际上我做不到。(wish)对于文学的奥秘,只能略加阐释,做点提示,仅此而已。【T2】我就试着给诸位做点提示吧。(thinking)为此,我要引导你回顾一下你的历史,或者做一番遐想。【T3】比
随机试题
经济学家:现在中央政府是按照GDP指标考量地方政府的政绩。要提高地方的GDP,需要大量资金。在现行体制下,地方政府只有通过转让土地才能筹集大量资金。要想高价拍卖土地,则房价必须高,因此地方政府有很强的推高房价的动力。但中央政府已经出台一系列措施稳定房价,如
财会主管领导下的集中核算模式
出口散装矿产品,如氟石、煤炭等,均为露天大垛堆存,抽样困难,且品质又不够均匀,一般采取()
Mrs.Smithtreatedherlittledogquite______.Fromitsexperience,thedogfoundthat______.
在涉外刑事诉讼中,关于国籍的确认,下列哪些做法是正确的?()
基金与股票、债券的差异不包括()。
企业通过筹集权益资本和增加借款,使销售增长,净利润也增长,必然会使权益净利率也随之增长。()
设A是n阶实对称阵,秩为r,A对应的二次型厂的符号差为s,则必有()
Inthefigureabove,asmallcircle,withradiusx,isinsidealargercircle,withradiusWhatisthearea,intermsofx,oft
Thefirstparagraphshowsthat______.WhataretheAmericansconcernedaboutaccordingtothepoll?
最新回复
(
0
)