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
2013-11-20
56
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.
SUMMARY;
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.
【R1】
选项
答案
to the ground
解析
(文章第一段第二句提到but most of them happen when all aircraft is relatively close to theground。“所有这些飞行事故的发生都是在飞机接近地面的时候。”)
转载请注明原文地址:https://kaotiyun.com/show/3cAK777K
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
Tina:Awomanstolefiftydollarsfromme.Igaveherthemoneybecauseshesaiditwouldhelpasickgirlinthehospital.Eve:
Writeacompositionofnolessthan150words,givingyourviewsaboutIntellectualDishonesty.Youshoulddescribethephenomen
Readthefollowingadvertisementandwritealetterofapplicationof120words.Donotwriteyouraddressorname.WANTEDFA
______really.Ilikebothpublictransportanddriving.
Whatistheprobablerelationshipbetweenthetwospeakers?
100mphgalescausechaos【76】Strongwinds,whichattimesreachedspeedsof100mph,broughthavoctomanypartsofBritain
anxiousabout,strong,suggest,instruct,which,especial,whether,applyto,all,both,great,formWorkingouttomusicca
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitudes.Emotionalreactionsaswellaslogicalthought
具有讽刺意义的是,诸如化妆品和减肥饮料这些被广告大肆渲染的产品对人体的魅力甚至是有害的。(detrimentalto)
【T1】我希望这个新学年成为对我的学生们有益的一年。(want…tobe)他们会在新学年学习很多东西,包括微积分、莎士比亚和失败。没错,就是失败。根据多种流传的说法,梭罗是个失败者。这位哈佛毕业生似乎把自己的大部分时间都用来在瓦尔登湖畔家
随机试题
肾筋膜把肾旁脂肪和肾周脂肪隔开,能防止感染扩散至下列位置,但除外()
当彩色血流频移大于1/2PRF(脉冲重复频率)时就会出现折返,这称为
子宫腺肌病多发生在育龄妇女,主要表现为子宫变小、痛经及月经量少。()
计划扩建的预留地或建筑物一般用虚线绘制。()
下列关于城市维护建设税相关规定的说法中,不正确的有()。
下列关于个人独资企业设立条件的表述中,符合《个人独资企业法》规定的是( )。
冲击疗法与系统脱敏疗法在原理上有所不同,前者的原理是()。
左边给定的是纸盒的外表面,下面哪一项能由它折叠而成?
甲发现乙盗窃其财物后,便手持铁棍追赶,并用铁棍投向乙,结果将路边的丙砸成重伤。对丙的人身伤害,甲的行为属于()。
在关系数据库中,对一个关系做投影操作后,新关系的元组个数将
最新回复
(
0
)