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
2018-10-19
33
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. Questions 71 to 75
Complete the summary below with information from the passage, using no more than three words for each blank.
A collision between an aircraft and one or more birds is known as a birdstrike. It usually happens when an aircraft is【E1】____, and may result in significant damage of the aircraft or loss of the aircraft and【E2】____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【E3】____. Local authorities need to take care when deciding on【E4】____. 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【E5】____in order to bring about changes in land use.
【E2】
选项
答案
the lives
解析
(文章第二段提到If this were to happen…the aircraft and the lives of those on board.“当所有这些发生的时候,就会造成飞机失事,乘客失去生命。”)
转载请注明原文地址:https://kaotiyun.com/show/1iyK777K
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
Cultureisatermforwhichitisverydifficulttogiveaprecisemeaning.Thewordmeanssomanydifferentthingstodifferen
Theannalsofnaturalhistorycontainmanyastonishingexamplesoftheabilityofanimalstofindtheirwayhomeaftermakingdi
Theannalsofnaturalhistorycontainmanyastonishingexamplesoftheabilityofanimalstofindtheirwayhomeaftermakingdi
(81)Wearetoldthatthemassmediaarethegreatestorgansforenlightenmentthattheworldhasyetseen;thatinBritain,for
是你们使我们的社会更加强大,我们的家庭更加健康和安全,我们的人民更加富裕。(socialfabric)
AcrossAfrica,thetsetseflythreatensastaggering55millionspeopleandtheir【M1】______livestock.Theinsectsucksblooda
CompaniesusuallyhirepeoplebasedontheirdiplomasandGPAs.
Fortunetellersaregoodatmaking______statementssuchas"Yoursorrowswillchange."
Readthestatementsbelow.Thenanswerthequestion.NoneofthefourJonesbrothersisthesameheight.Nobrotherist
随机试题
液压动力元件是油泵将_______的能量转换元件。
以下成语与《冯谖客孟尝君》一文无关的是()
()是发作性睡眠最危险的并发症。
A.血府逐瘀汤B.人参养荣汤C.苍附导痰丸合佛手散D.归肾丸加鸡血藤、首乌E.加减一阴煎加黄精、丹参、枳壳
因管理不善原因造成的损失,一般作为()入账
对国有资产享有所有权的是()。
【2015年吉林辽源】损害的发生是教育法律救济的前提。()
如图为某家族甲、乙两种遗传病的系谱图。甲病由一对等位基因(A、a)控制,乙病由另一对等位基因(B、b)控制,这两对等位基因独立遗传。正常人群中携带甲病的致病基因的频率是10-2,Ⅲ-4不携带乙病的致病基因,Ⅳ-2的性染色体组成为XXY。下列相关叙述中错误的
ControlanUniversityLogisticNumber,BoycottSchoolFeesRiseOverthelasttwodecades,collegesanduniversitiesdoubled
Itwasasunnyday.Alittleboy’sfatherwassittingonthecouch,drinkingabeerwhilewatching【K1】______basketballmatch.S
最新回复
(
0
)