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
57
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.
【R3】
选项
答案
careful habitat management/bird harassment techniques
解析
(机场往往会成为鸟儿最喜欢的地方,因为他们可以来这觅食,所以为了防止事故的发生,机场的负责人员应该采取生境管理政策或是设置一些防鸟的工具。)
转载请注明原文地址:https://kaotiyun.com/show/RcAK777K
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
Howmanypeoplecantheboatcarry?
Rearrangethefollowingletterstomakeasinglewordandthenchoosethecategoryinwhichitbelongs.FAREFIG
Writeacompositionofnolessthan150words,givingyourviewsonthefollowingquestion:Shouldcompaniesgivemenandwo
Sincewearesocialbeings,thequalityofourlivesdependsinlargemeasureonourinterpersonalrelationships.Onestrengtho
Whatistheprobablerelationshipbetweenthetwospeakers?
我劝他放弃计划,可他不听。(invain倒装句)
Makingagoodfirstimpressionisimportantforbuildingrelationshipswithotherpeople.Inbusinessnetworking,apositivefir
100mphgalescausechaos【76】Strongwinds,whichattimesreachedspeedsof100mph,broughthavoctomanypartsofBritain
anxiousabout,strong,suggest,instruct,which,especial,whether,applyto,all,both,great,formWorkingouttomusicca
公司的利润连续三个月下滑,你如何解释?(accountfor)
随机试题
蠕虫成虫直接产幼虫的有
剧场观众厅地面坡度超过多少时应做台阶?
施工图预算的编制采用的计价方法中,______是工程量清单计价模式采用的计价方式。
出差人员必须随身携带的差旅费,现金支付不受结算起点的限制。()
某跨国汽车公司1997年进入中国市场,业务范围不断扩大,不仅在汽车制造领域站稳脚跟,而且通过并购、联合等多种形式,使业务遍及家电、医药、建筑等多个领域。在汽车制造领域,该公司业绩表现尤为突出,不断针对不同类型人群,推出具有独特功能和款式的新型号汽车,占领不
河南自然旅游资源的特点有()。
关于求助者的重要问题,以下描述哪些是正确的?()
下列犯罪行为中,侵犯的客体是简单客体的是()。
设Ω:x2+y+z2≤1,则
单个项目管理的过程组中,_________的主要任务是确定和细化目标,并规划为实现项目目标和项目范围的行动方针和路线,确保实现项目目标。
最新回复
(
0
)