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
measures
解析
文章最后两句话提到In such cases it may not be possible to implement…measures which are designed to achieve this.摘要中可以概括为measures。
转载请注明原文地址:https://kaotiyun.com/show/BPyK777K
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
Americaisthecountryoffastfood.AnordinaryyoungpersonintheUSAeatsonaverage6hamburgersaweekandabout300ayea
ABCDEFGHWhichletteristwototheleftoftheletterimmediatelytotherightoftheletterthatisthreetotherightofthe
February14isValentine’sDay.Althoughitiscelebratedasalovers’holidaytoday,withritegivingofcandy,flowers,oroth
Itisessentialthatmisunderstanding______duringbusinessnegotiations.
—HaveyouheardanEnglishexpressionaboutdogsandtricks?—Yeah,itis"Youcan’tteachan________dog________tricks."
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturerspe
Eagertotrustbutdeterminedtoverify,manysinglewomeninanageofriskyromancearehiringprivatedetectivestocheckthe
Whilemanypeoplemayrefertoup-to-minutenews,itisunlikelythattelevisionandtheInternet_________thenewspaperscompl
Therateatwhichmanhasbeenstoringupusefulknowledgeabouthimselfandtheuniversehasbeenspiralingupwardfor10,000y
地球表面到底能容纳多少人?没人知道答案。【T1】这取决于人们在不摧毁环境的情况下能种植多少粮食。(dependon)现在世界人口比以前多得多,而且人口还在不断增长【T2】每15秒钟就有100个孩子出生。(bebom)到20世纪末,世界人口将达到1
随机试题
WalkingdownapaththroughsomewoodsinGeorgia,Isawawaterpuddleaheadonthepath.Iwalkedaroundtothesideofthepa
急性胎儿窘迫最敏感的监测指标是
蜘蛛痣罕见于下列哪个部位
A.间歇脉B.缓脉C.三联律D.绌脉E.速脉房室传导阻滞的脉搏是()。
危险化学品的燃烧按其要素构成的条件和瞬间发生的特点,可分为()等类。
根据承发包的合同结构,理顺管理关系,建立统一的现场施工组织系统和质量管理的综合运行机制,确保质量保证体系处于良好的状态,这属于环境因素中的()。
根据以下资料,回答问题。2005到2011年,平均每年新增城镇职工基本医疗保险参保者约为多少亿人?
案例分析题(本题40分)深圳某物流公司是深圳商贸集团的核心企业之一。商贸集团下设贸易公司、物流公司和电子商务公司三部分。物流公司是整个集团进行多元化经营和第三方物流中心战略的核心。物流公司拥有的配送中心是目前国内较大的公共化配送中心之一,面积20万多平方
你的领导在你毫无准备的情况下分配给你一项任务.但你如果接下这个任务将严重影响你手头正在进行的工作,你会怎么办?
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationality,butwhenitcomestomycollegeeducation,Ia
最新回复
(
0
)