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
2018-10-19
17
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.
Bird-strikes 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. Questions 71 to 75
Complete the summary below with information from the passage, using no more than three words for each blank.
A collision between an aircraft and one or more birds is known as a birdstrike. It usually happens when an aircraft is【E1】____, and may result in significant damage of the aircraft or loss of the aircraft and【E2】____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【E3】____. Local authorities need to take care when deciding on【E4】____. 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【E5】____in order to bring about changes in land use.
【E4】
选项
答案
land uses
解析
(文章第四段提到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.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land uses。)
转载请注明原文地址:https://kaotiyun.com/show/9iyK777K
本试题收录于:
A类竞赛(研究生)题库大学生英语竞赛(NECCS)分类
0
A类竞赛(研究生)
大学生英语竞赛(NECCS)
相关试题推荐
ThemanisquitesatisfiedwithhislifeatHarvardbecausehesetsupaChineseStudents’Associationattheuniversity.
ClassesinStudioeveryafternoonRoom51on【21】OnFridayscanuse【22】forprivatestudyExtracourses:Monda
Effectivereadingrequiresnotonly"readingbetweenthelines,"butalso"writingbetweenthelines."Therearetwoways
MostBritishcouples,whetherreligiousornot,haveachurchwedding,whichcombinesthereligiousritewiththelegalcontract
InwhichChinesecityisMr.Dong’suniversitylocated?
TheAmericandefinitionofsuccessislargelyoneofacquiringwealthandahighermaterialstandardofliving.Itisnotsurpri
Theageofrequiringretirementincompaniesshouldberaised,andso【M1】______shouldtheagetobeginSocialSecurity.First
AcrossAfrica,thetsetseflythreatensastaggering55millionspeopleandtheir【M1】______livestock.Theinsectsucksblooda
Diamondshavelittle______valueandtheirpricedependsalmostentirelyontheirscarcity.
Oncetheyhadfame,fortune,securefutures;______isutterpoverty.
随机试题
人工流产时发生子宫穿孔,下列哪些处置恰当
面部感染逆行传入颅内会引起哪种严重的并发症
公路货物运输是主要使用汽车,包括其他车辆(如人力车、畜力车)在公路上进行货物运输的一种方式。公路货物运输以汽车为主要运输工具,具有机动灵活,迅速方便的特征。()
期货交易的竞价方式又称()。
目前,我国股票基金大部分按照1.5%的比例计提基金管理费,债券基金的管理费费率一般低于1%,货币市场基金的管理费费率为0.33%。( )
ABC公司2012年的税后利润为420万元,所得税税率为25%,全年固定成本和利息费用总额共为2350万元,其中公司今年年初发行了一种债券,发行债券数量为1万张,债券年利息为当年利息总额的40%,发行价格为1050元,发行费用占发行价格的2%。预计下年
下列有关注册会计师执行的业务提供的保证程度的说法中,正确的是()。
物质是运动发展的,下列成语中的行为没有认识到这一哲理的是()。
与意志的自觉性相反的意志品质是()。
女性,45岁,近两个月来性交接触性出血。阴道镜检查:子宫颈呈糜烂性改变。病理检查:鳞状上皮内异型性上皮细胞占据上皮全层。病理诊断属于
最新回复
(
0
)