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
60
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.
Birdstrikes 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. Question 71 to 75
Complete the summary below with information from the passage, using three words or fewer for each blank.
A collision between an aircraft and one or more birds is known as a bird strike. It usually happens when an aircraft is close【R1】______, and may result in significant damage of the aircraft or loss of the aircraft and【R2】______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【R3】______Local authorities need to take care when deciding on【R4】______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【R5】______in order to bring about changes in land use.
【R2】
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/I98K777K
本试题收录于:
B类竞赛(英语专业本科专科)题库大学生英语竞赛(NECCS)分类
0
B类竞赛(英语专业本科专科)
大学生英语竞赛(NECCS)
相关试题推荐
Auctionsarepublicsalesofgoods,conductedbyanofficiallyapprovedauctioneer.Heasksthecrowdassembledintheauction-r
Althoughfewwoulddenythatit’sbettertoberichthanpoor,forsomepeoplethequestformoneyissoall-consumingthatite
DespiteoutcriesoverthelackofforeignlanguageskillsintheU.S.workforce,multinationalcorporationsaren’tworriedabou
Acollisionbetweenanaircraftandoneormorebirdsistermedabird-strike.Pilotssometimesrecordabirdstrikewhileatcru
Acollisionbetweenanaircraftandoneormorebirdsistermedabird-strike.Pilotssometimesrecordabirdstrikewhileatcru
______beforewedepartthedayaftertomorrow,weshouldhaveawonderfuldinnerparty.
Ontheleftaretwoshapeswithanarrowbetweenthem.Decidedhowthesecondisrelatedtothefirst.Afterthisthereisathi
Ontheleftaretwoshapeswithanarrowbetweenthem.Decidedhowthesecondisrelatedtothefirst.Afterthisthereisathi
Acollisionbetweenanaircraftandoneormorebirdsistermedabird-strike.Pilotssometimesrecordabirdstrikewhileatcru
Acollisionbetweenanaircraftandoneormorebirdsistermedabird-strike.Pilotssometimesrecordabirdstrikewhileatcru
随机试题
患者女性,60岁,慢性咳喘20年,剧烈咳嗽3天,无咳痰、咯血及发热,半小时前突发胸痛,呼吸困难,不能平卧,伴发绀。体检:血压150/100mmHg,呼吸40次/分。右胸语颤减弱,呼吸音减低。心率110次/分。以上表现符合
A.射干麻黄汤B.定喘汤C.小青龙汤加石膏汤D.三子养亲汤E.平喘固本汤热哮证的代表方宜选用()
热爱工作是最基本的职业道德要求。()
FDIC《施工合同条件》中,业主提供的支付保函的担保期限至( )。
下列()不影响企业的试算平衡。
通货紧缩形成对( )的预期。
旅游是人类精神生活的需要,旅游者通过旅游陶冶情操,发展个性,调节心理平衡,净化心灵。因此,导游服务的核心内容是()。
根据下面材料回答下列问题。在该公司用户的调查中发现,70%的被调查者在租车旅行时不趟过5人,80%的被调查者的租车时间为每次两天,90%的被调查者表示自己从未在周三租车。据此来看,以下哪项措施能更好地服务公司用户?
[A]Payeveryonefairly[B]Raisepart-timers’pay[C]Stopignoringpart-timers[D]Starttolookatyourstaff’sreal
实施BSP方法是一个转化过程,它将企业的战略转化为【】的战略。
最新回复
(
0
)