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
2016-01-14
79
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.
【R4】
选项
答案
land uses
解析
(文章D部分提到Care needs to be taken by local authorities in deciding the location of rub-bish tips,or when permitting other land rises that may be attractive to birds in this way. 当政府部门在决定陆地的使用时,应该考虑这些使用会不会影响机场的运作。因此摘要中应该概括为land uses。)
转载请注明原文地址:https://kaotiyun.com/show/7SAK777K
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
ThisWednesday,GordonBrownwillreplaceTonyBlairasthenewheadofBritain’sLaborParty.Thislong-servingchancellorisa
Thereseemstobealarge______betweenthenumberofpeopleemployedinserviceindustries,andthoseemployedintheprimaryse
Whatistheprobablerelationshipbetweenthetwospeakers?
TheMillenniumSeedBankProjectOneofthelargestconservationprojectseverundertaken;thisinternationalcollaboration
Makingagoodfirstimpressionisimportantforbuildingrelationshipswithotherpeople.Inbusinessnetworking,apositivefir
Whatistheprobablerelationshipbetweenthetwospeakers?
OneofAmerica’smostimportantexportsishermodernmusic.Americanpopularmusicisplayingallovertheworld.Itisenjoyed
Eachnumbershownbelowfollowsacertainrule.Figureouttheruleandworkoutthemissingnumber:
中国经济发展潜力大、优势足、空间广,前景光明。【T1】我们有9亿多劳动力,其中1.7亿多受过高等教育或有专业技能。(非限制性定语从句)每年大学毕业生700多万,中职毕业生500多万。【T2】科技人员数量世界第一,研发投入(R&Dinput)世界第
Pattygetsalongwithherfloormatesandtheygoouttopartiestogether.
随机试题
Howmanythingscanyouseeinthenightsky?Alot!OnaclearnightyoumightseetheMoon,someplanets,andthousandsofspa
患者男,33岁。胸闷、气短、咳嗽、咳痰2个月,进行性加重。查体:血压120/80mmHg,颈静脉怒张,双肺底可闻及湿啰音,心脏向左下扩大,心率110次/分,可及奔马律,肝肋下3cm,双下肢水肿。肌钙蛋白正常。能够提高该患者生存期的药物为
关于司法的表述,下列哪些选项可以成立?(司考.2007.1.54)
【背景资料】某高校新建一栋办公楼和一栋实验楼,均为现浇钢筋混凝土框架结构。办公楼地下1层,地上11层,建筑檐高48m;实验楼6层,建筑檐高22m。建设单位与某施工总承包单位签订了施工总承包合同。合同约定:(1)电梯安装工程由建设单位指定分包;(2)保温工程
关于国际金本位制的内容,正确的是()。
根据资料,回答下列问题。2009年,根据产量由小到大排列正确的是()。
2月9日下午15:00点,小华利用网络软件进行约车。司机黄某见小华衣饰华丽,便威胁其交出钱财,小华便向公安机关报案。下列哪些属于公安机关应了解的信息?()
编译下面源程序会得到—文件。classA1{}classA2{}publicclassB{publicstaticvoidmain(Stringargs[]){
Whichwordcanbestdescribethefreshmen?
InEnglishthelettercomhinati6n"mis-"intheword"misunderstand"iscalled______.
最新回复
(
0
)