首页
登录
职称英语
[originaltext] [19]Within the next few weeks a twin-engined Jetstream will t
[originaltext] [19]Within the next few weeks a twin-engined Jetstream will t
游客
2024-04-07
49
管理
问题
[19]Within the next few weeks a twin-engined Jetstream will take off from Warton Aerodrome in Lancashire, England, and head north towards Scotland. Like any other flight, the small commuter airliner will respond to instructions from air-traffic controllers, navigate a path and take care to avoid other aircraft. [19]But the pilot flying the aircraft will not be in the front of it: he will have his feet firmly on the ground in a control room back at Warton.
Pilotless aircraft are now widely used by the armed forces, but they fly only in restricted airspace and conflict zones. The Jetstream mission is part of a project to develop the technologies and procedures that will allow large commercial aircraft to operate routinely and safely without pilots in the same skies as manned civilian flights.
[20]To reassure those of a nervous disposition, the test flights do not carry passengers and pilots remain in the plane just in case things go wrong. In that way they are similar to Google’s trials of driverless cars, which have drivers inside them to take over if necessary while on public roads. Yet unmanned commercial aircraft are likely to enter service before people can buy autonomous cars. Modern aircraft are already perfectly capable of automatically taking off, flying to a destination and landing. These tests are trying to establish whether they can do those things safely without a pilot and at the same time comply with the rules of the air.
Progress is being made, a conference in London heard this week. It was organized by the Autonomous Systems Technology Related Airborne Evaluation and Assessment, the group staging the British test flights. This 62 million programme, backed by the British government, involves seven European aerospace companies: AOS, BAE Systems, Cassidian, Cobham, QinetiQ, Rolls-Royce and Thales.
It is potentially a huge new market. America’s aviation regulators have been asked by Congress to integrate unmanned aircraft into the air-traffic control system. [21]Some small aircraft are already used in commercial applications, such as aerial photography, but in most countries they are confined to flying within sight of their ground pilot, much like radio-controlled model aircraft. Bigger aircraft would be capable of flying farther and doing a lot more things.
[22]Pilotless aircraft could carry out many jobs at a lower cost than manned aircraft and helicopters— tasks such as traffic monitoring, border patrols, police monitoring and checking power lines. They could also operate in conditions that are dangerous for pilots, including monitoring forest fires or nuclear-power accidents.
19. What do we learn about the commuter airliner Jetstream?
20. What does the speaker say about the test flights?
21. What do we learn about the small aircrafts?
22. What advantage do the pilotless planes have?
选项
A、They’re similar to a radio-controlled model aircraft
B、They fly throughout the world freely just like eagles.
C、They can autonomously comply with the air rules.
D、They are more flexible and faster than bigger aircraft.
答案
A
解析
①从选项看,此题可能跟某种飞机的飞行情况有关。②演讲者提到一些小的无人机已经应用于商业用途,但是在大部分国家他们的飞行受控于地面飞行员,所以它们的飞行方式与无线电控制的模型飞机如出一辙。故A正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3544395.html
相关试题推荐
[originaltext]AmericanmagicianDavidBlaineistobesuspendedinaglass
[originaltext]AmericanmagicianDavidBlaineistobesuspendedinaglass
[originaltext]W:Hello.Isthistheregistrationoffice?M:Yes.ThisisHerber
[originaltext]M:Comein,Rose.Coffee?W:Thankyou,Jack.M:Howaboutthevi
[originaltext]M:Comein,Rose.Coffee?W:Thankyou,Jack.M:Howaboutthevi
[originaltext]Iwanttothankallofthestudentswhoareheretoday.AndI
[originaltext][19]Withinthenextfewweeksatwin-enginedJetstreamwillt
[originaltext][19]Withinthenextfewweeksatwin-enginedJetstreamwillt
[originaltext][19]Withinthenextfewweeksatwin-enginedJetstreamwillt
[originaltext]Ifyouweretovisiteducation,asanalien,andsay"What’s
随机试题
Whatdoesthegirlwant?[br][originaltext]M:Whichwouldyouliketodrink,t
Humanityusesalittlelessthanhalfthewateravailableworldwide.Yetocc
Ifaphonemeissubstitutedforanotherinawordandthesubstitutionresultsi
InaBertelsmannFoundationstudyonsocialjusticereleasedthisfall,the
二体雄蕊
下列因素中,可提高肺换气效率的是( )。A.呼吸膜面积增大 B.呼吸膜厚度增
内囊外侧是A.尾状核 B.尾状核和背侧丘脑 C.豆状核 D.屏状核 E.
按提供核算指标的详细程度分类可以将账户分为( )。A.资产类账户和负债类账户
两种劳动参与假说的前提,其观点是相同的,即()的劳动力参与率与经济周期不存在敏
2015年以来,Z石化公司与42家供应商签订协议,并在协议中规定,与供应商实现物
最新回复
(
0
)