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
2016-12-08
53
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/mOAK777K
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
Alanguageisasystemofsounds,gestures,orcharactersusedbyhumanstocommunicatetheirideasandfeelings.Thereareabou
HowdoestheBritishQueenfeelabouttheInternet?
EversincesheappearedwithRichardGereinPrettyWoman,JuliaRobertshasbeenhailedasoneofthebrighteststarsincinema
EversincesheappearedwithRichardGereinPrettyWoman,JuliaRobertshasbeenhailedasoneofthebrighteststarsincinema
Acollisionbetweenanaircraftandoneormorebirdsistermedabird-strike.Pilotssometimesrecordabirdstrikewhileatcru
Resourcescanbesaidtobescarceinbothanabsoluteandrelativesense;thesurfaceoftheEarthisfinite,imposingabsolute
Resourcescanbesaidtobescarceinbothanabsoluteandrelativesense:thesurfaceoftheEarthisfinite,imposingabsolute
Surfingissomethingpeopleoftengethookedonaftertryingitafewtimes.Formanysurfersitismuchmorethanahobby—they
Surfingissomethingpeopleoftengethookedonaftertryingitafewtimes.Formanysurfersitismuchmorethanahobby—they
HillaryClintonwasinherelement.OnstageatBelfast’sGrandOperaHouselastweek,flankedbyvolunteersandpoliticians’w
随机试题
食管癌的分型:______、________、______、________。
在20世纪末,我国初步建成小康社会,人民生活总体上实现了()
关于脑复苏下列错误的是
A.生脉散B.右归丸C.左归丸D.归脾汤E.一贯煎
急性细菌性前列腺炎,抗生素治疗应首选
某港5万吨级航道疏浚工程长2km,采用1艘4500m3耙吸挖泥船施工。航道设计底标高-12.0m(当地理论深度基准面,下同),设计底宽150m,边坡1:5,计算超深0.5m,计算超宽5m,浚前平均高程-7.0m,疏浚土质为流动性淤泥和淤泥质土,疏浚土全部外
下列误差中哪一项属于登记性误差产生的原因()。
根据《反不正当竞争法》规定,下列_______不违法。
甲、乙等八家企业筹划建立股份有限公司,发起人甲企业作为出资的厂房需要装修。于是,由乙企业负责成立股份有限公司筹建处,专门定作了一批装饰材料,价值140万元。如果公司无法成立,承担140万元装饰材料费的方案正确的是()。
某企业的员工参加了一项需缴纳170元培训费的培训。同时,该企业允许非内部员工参加培训,但不能享受员工优惠价。参训的非内部员工,如果是男生需交350元,如果是女生需交300元。结果,共有50人参加培训,整个培训收到的费用总额为10000元。由此可知,有多少个
最新回复
(
0
)