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
20
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
Themostcrucialway,however,ofimprovingthelabourcoststructureatSAH(SydneyAirportHotel)wastofindbetter,morepr
Thedeathwatchbeetleisthoughtofasthedevil’spestinchurchesandoldhouses,butinnaturalhabitatsitinfestsawidera
TheTotaraLanguageInstituteispartoftheUniversityofWaikatointhecityofHamilton,inNewZealand’sNorthIsland.Inte
WhenVetwasalittlegirl,herfamilyconsistedof______.
OneofthemostextraordinarythingsabouttheFirstWorldWarwastheenthusiasm______themajorityofsoldierswentofftofigh
ThemajorsourceofincomeofIrishfarmersis______.
AcrossAfrica,thetsetseflythreatensastaggering55millionspeopleandtheir【M1】______livestock.Theinsectsucksblooda
Sheis______amusicianthanherbrother.
FannyKemble(1809—93)wasthenieceoftwoShakespeareantragedians,SarahSiddonsandSiddons’sbrother,JohnPhilipKemble.【R1】
随机试题
一奶牛难产娩出胎儿后,后肢不能站立,体温、脉搏、呼吸及食欲反刍均正常。关于该病病因错误的是
患儿,男,6岁,所有乳磨牙均为龋齿,这个年龄的儿童乳牙龋蚀的临床表现不可能是A.患龋率高B.修复性牙本质的形成活跃C.龋蚀范围广D.患者常有明显的自觉症状E.龋蚀发展速度快
村民陈某在本村建一住宅,镇政府认定其非法占用土地,违反《土地管理法》,作出拆除房屋、退还土地的决定,随后将房屋强制拆除。陈某向法院提起诉讼,请求撤销镇政府的决定,确认拆除行为违法。关于镇政府的权力,下列哪一选项是正确的?(2009年试卷二第43题)
在商品流通企业管理信息系统的软件系统中,必须包括()。
下列各项负债中,其计税基础为零的有()。
“完整地接纳”求助者,并不意味着()。
ASP是(1)网页制作技术。A.动态B.静态(2)是矢量动态工具。A.flashB.jpgC.bmp
【B1】【B9】
Forcenturies,immigrantshavecometoAmericaseekingthepromiseoflife,liberty,andthepursuitofhappiness.Somecamefl
Indiatoppedalistofcountriesinitshopefulnessaboutretirement,accordingtoarecentreportbyHSBCofpeople’sexpectat
最新回复
(
0
)