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
2011-02-05
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【51】, and may result in significant damage of the aircraft or loss of the aircraft and【52】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【53】Local authorities need to take care when deciding on【54】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【55】in order to bring about changes in land use.
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/4xAK777K
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
FiresthroughtheIndonesiancountrysideareduetoanaturalphenomenon.
Somepeoplethinkthatuniversitiesshouldprovidestudentswiththeknowledgeandskillsneededintheirfuturework.Othersth
据俄罗斯卫星新闻报道,俄罗斯教育科学部副部长谢尔盖-克拉夫佐夫日前宣布,【T1】汉语将作为一门外语进入俄罗斯高考(include)。他称:“2019年将首次在国家统一考试中进行汉语科目的考试。我方连续测试了几年,这个过程很不容易。【T2】这是一种特殊
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteffectivedetectionsystemsisa600-poundanimal【C1】____
A、Bycallingthecompany.B、Byaskingthesalesrepresentative.C、Bylookingatthepricelist.D、Bycomparingwithotherproduc
________theresearchuncoveredsomeproblems,thecompanydecidedtostoptheproject.
John:Whatplasticproductsdoyouhaveinmindthatareeasytorecycle?Tom:Shampoobottles,detergentbottles,medicinebott
由于没有受到什么教育,没有掌握有用的技术,所以他很难挣到足够维持生活的工资。(adequate)
A、Aspeech.B、Amovie.C、Aplay.C
Statusesaremarveloushumaninventionsthatenableustogetalongwithoneanotherandtodeterminewherewe"fit"insociety.
随机试题
反映哥萨克人民在历史转折时期的生活变迁,开创了独特的悲剧史诗的艺术风格的是()
A.IgMB.IgAC.IgED.SIgAE.IgG单向琼脂扩散试验通常不用来检测
A.粗死亡率B.年龄别死亡率C.标准化死亡率D.平均预期寿命E.婴儿死亡率为比较年龄结构不同的人群整体死亡水平,可采用
在商用房贷款合作机构风险的防控措施中,加强对开发商及合作项目审查的具体措施不包括()
会计收益率的优点不包括()。
交易性金融资产期末按公允价值计量,期末不能计提减值准备;可供出售金融资产期末也按公允价值计量,因此期末也不能计提减值准备。()
《工伤保险条例》对职工因工致残被鉴定为一级至四级伤残的人员享受的相关待遇进行了明确规定,下列说法中错误的是:()。
根据下面材料回答下列小题。2004年,某市房地产市场供需高位均衡,并呈现供略大于需的合理态势,商品房竣工面积1956.29万平方米,比去年同期增长45.3%;销售面积1876.31万平方米,比去年同期增长21.0%。供需绝对差额79.98万平方
BigBenisin______.
ItiscommonlybelievedthatintheUnitedStatesschooliswherepeoplegetaneducation.Nevertheless,ithasbeensaidthatt
最新回复
(
0
)