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
A collision between an aircraft and one or more birds is termed a bird-strike. Pilots sometimes record a birdstrike while at cru
A collision between an aircraft and one or more birds is termed a bird-strike. Pilots sometimes record a birdstrike while at cru
admin
2016-12-08
47
问题
A 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.
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.
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.
Question 71—75
Complete the summary with words from the passage, changing the form where necessary, with only one word for each blank.
A collision between an aircraft and one or more birds is known as a bird strike. It usually happens when an aircraft is close to the【R1】______, and may result in significant damage of the aircraft or loss of the aircraft and the lives of passengers and crew if they occur during take-off or 【R2】______climb. Because birds can find plenty food in flat grassed areas, airports are especially attractive to birds. However, the danger can be minimized by careful【R3】______management or bird harassment techniques. Local authorities need to take care when deciding on land uses. It is suggested that a full【R4】______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
habitat
解析
(第三段提到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,“this problem can be reduced by careful habitat management or bird harassment techniques”。)
转载请注明原文地址:https://kaotiyun.com/show/fLNK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
Brightcolorsstiruparangeoffeelings.Forexample,thecolorredcancausepeopletofeelexcited.Infact,redcanev
如果要把产品推向市场,花大量时间做市场调研是很必要的。Ifyouwanttomarketyourproduct,——.
LeisureActivitiesAccordingtoamagazineIreadrecently,wenowliveinanageofincreasingleisure.Not【16】o______are
LeisureActivitiesAccordingtoamagazineIreadrecently,wenowliveinanageofincreasingleisure.Not【16】o______are
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcarbondioxide—agreenhousegas—fromtheatmosphereand
—Hello!CanIspeaktoAlice,please?—Sorry.Sheisn’tinatthemoment.—______?Pleasetellhertocallmebackonmymobile.
Readthestatementsbelow.Thenanswerthequestion.NoneofthefourJonesbrothersisthesameheight.Nobrotheristallerth
Ishallneverforgetthoseyears______Ilivedinthecountrysidewithmygrandparents,______hashadagreateffectonmylife.
AreYouaSuccessfulLeader?TheSuccessfulLeadershipTrust—ourcompanyspecializesintrainingyoutobeasuccessfullead
Bynomeans______lookdownupontheunemployed.
随机试题
血浆胶体渗透压决定于
下列说法中错误的是
直角刚杆OAB可绕固定轴O在图所示的平面内转动,已知OA=40cm,AB=30cm,ω=2rad/s,ε=1rad/s2。则图示瞬时,B点的加速度在x和y向的投影分别为()。①40cm/s2②00cm/s2③50cm/s2④一200cm/s2
下列关于能源资源开发利用的表述中,错误的是()
( )的税收负担随着计税依据数额的增加而递增,能够较好地体现纳税人的税负水平与税负能力相适应的原则,可以更有效地调节纳税人的收入、财产等,正确处理税收负担公平问题,多在所得、财产课税中应用。
某大型工程项目由政府投资建设,业主委托某招标代理公司代理施工招标。招标代理公司确定该项目采用公开招标方式招标,招标公告在当地政府规定的招标信息网上发布。招标文件中规定:投标担保可采用投标保证金或投标保函方式担保,评标疗法采用经评审的最低投标价法,投标有效期
甲公司为增值税一般纳税企业,该企业购进固定资产的增值税额可以抵扣,适用的增值税税率为17%。甲公司2013年至2016年与固定资产有关的业务资料如下:(1)2013年11月1日,甲公司以自营方式建造一条生产线。购入工程物资,取得的增值税专用发票上注明的价
固定资产的各组成部分具有不同使用寿命或者以不同方式为企业提供经济利益的,应当将各组成部分分别确认为单项固定资产。( )
某学校购买一批牛奶到一敬老院慰问老人。如果送给每位老人4盒牛奶,那么还剩28盒;如果送给每位老人5盒,那么最后一位老人又不足4盒,则该敬老院的老人人数至少是:
设有两个事务T1、T2,对数据A的并发操作如下图所示。下列说法中正确的是()。
最新回复
(
0
)