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
32
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/zvAK777K
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
HereispartofaletterfromanEnglishfriend:Guesswhat?Myparentshavegivenmesomemoneyforpassingmyexam,soI
Nuclearpowerplantsaresomeofthelargestproducersof______wastes,witheachplantproducingbarrelsofradioactivemateri
Whichofthewords,AtoD,ismissingfromthebrackets?BEND(LOOPHOLE)LAIRHALT(……)LEAF
Sometimesitisnecessarytobecareful______therightdatetositforatest.
许多插图画家只好亲自学习电脑制图。(resign,manya)
Whatistheprobablerelationshipbetweenthetwospeakers?
100mphgalescausechaos【76】Strongwinds,whichattimesreachedspeedsof100mph,broughthavoctomanypartsofBritain
【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
(81)具体说,信息化主要是反映在沟通手段的网络化,也就是所谓的网络经济。这网络就是指由卫星、光纤、电缆和电话线路把世界各个角落联系到一起的电脑网络。(82)只要用鼠标一点,在地球另一端的信息马上就会以每秒钟绕地球七周半的光速跑到你的电脑荧光屏上。
YYZZZYZZYisto221112112asYYZZYZZYisto______.
随机试题
患者,女,38岁。乏力半年,贫血貌。平时月经量多,体检发现子宫肌瘤。化验检查:血红蛋白60g/L,白细胞及血小板正常,骨髓增生活跃,以红系增生明显,幼红细胞体积小,红细胞中心淡染区扩大。某患者经治疗后血红蛋白升高,但一直未能持续正常,进一步的治疗建议是
地图以概括、抽象的形式反映出制图对象的带有规律性的类型特征,而将那些次要、非本质的物体舍弃,这个过程称为制图综合。()是制图综合对制图现象进行的两种基本处理。
投资基金集中社会资金的方式主要为向投资者发行()。
证券公司从事证券发行上市保荐业务,应依照《管理办法》的规定向国务院申请保荐机构资格。( )
(2011年)下列存货计价方法中,能够准确反映本期发出存货和期末结存存货的实际成本、成本流转与实物流转完全一致的是()。
2018年1月1日,A公司和B公司共同出资购买一栋写字楼,各自拥有该写字楼50%的产权,用于出租收取租金。合同约定,该写字楼相关活动的决策需要A公司和B公司一致同意方可作出;A公司和B公司的出资比例、收入分享比例和费用分担比例均为各自50%。该写字楼购买价
《老年人权益保障法》明确指出:老年人养老主要依靠()。
在进行“物质的跨膜运输”一课的教学时,教师为了让学生更好地理解“扩散作用”,用国外某版本生物教材上的有关扩散作用的“迷你实验”替换了该校所用教科书上的实验,在本课教学中取得了良好的效果。该教师的做法()。
解除降级行政处分,意味着恢复原级别。()
根据我国《宪法》,()决定乡、民族乡、镇的建置和区域划分。
最新回复
(
0
)