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、It’s a commercial plane with two captains. B、It’s a newly produced American plane. C、It’s a fighter armed with high technology
A、It’s a commercial plane with two captains. B、It’s a newly produced American plane. C、It’s a fighter armed with high technology
admin
2016-12-18
50
问题
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. 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.
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 driver-less 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. 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.
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、It’s a commercial plane with two captains.
B、It’s a newly produced American plane.
C、It’s a fighter armed with high technology.
D、It’s an auto-driven plane without pilots.
答案
D
解析
①从选项看,此题可能跟某种飞机有关。②录音开头演讲者提到。在接下去的几周内一架名为Jetstream的双引擎飞机将从英国Lancashire的Warton机场起飞去苏格兰,演讲者指出这架飞机的飞行员将不在飞机上而是在Warton机场的控制室内。故D“这是一架自动飞行的飞机,没有驾驶员”正确。
转载请注明原文地址:https://kaotiyun.com/show/yxF7777K
0
大学英语六级
相关试题推荐
IfJohnnycan’twrite,oneofthereasonsmaybeaconditioningbasedonspeedratherthanrespectforthecreativeprocess.Spe
现在,世界上大约有超过40个国家种植茶叶,而亚洲国家的产茶量占到了全球的90%。其他国家的茶树来源,都直接或间接地源自中国。许多国家用于指茶叶或者茶水的词都是汉字“茶”的衍生物(derivatives)。要想泡一壶好茶,必须要特别注意水的质量、水的温度、茶
早在文字出现之前,就有人发明了风筝,因此关于它的起源有各种各样的说法。中国人拥有制造风筝最基本的材料一一丝绸和竹子,而且中国人是最早用文字记录风筝的。据记载,公元前478年中国的一位哲学家(philosopher)墨子花了三年时间用木头做成了一只会飞的鸟。
SaveforCollege[A]Inthisarticle,we’lllookattherulesfor529QualifiedStateTuitionPlans.We’llexplorethedifference
PoliceinthepopularresortcityVirginiaBeachrecentlybeganoperatingvideosurveillancecameraswithcontroversialfacerec
A、Howhebecameanannouncer.B、Howhewritesnewsstories.C、Howhemakeshisliving.D、Howhedoeshisjob.D四个选项均是以“Howhe+动词
A、Toattendtheorientation.B、Tomeethisprofessor.C、Tofindsomebooks.D、Tousethecomputer.C
A、Theconsiderableamountofmoneyspentonit.B、Themajorityoftimespentonandaroundit.C、Theunavoidableareaittakesi
A、Motherisimportantforchildrenaswellasteachers.B、Stayingwithmotherisbetterthanattendingadaycarecenter.C、Ther
随机试题
浩浩认识了红苹果,当他在商场看到了绿苹果之后知道苹果有不同颜色。这属于()
A.cAMPB.cGMPC.Ca2+D.DAG一氧化氮发挥作用时,其第二信使是
A.吸潮B.晶型转变C.水解D.氧化E.风化苷类药物易()。
通过增加外周组织对葡萄糖的摄取、抑制糖异生,从而降低血糖的药物是
如图所示的桁架,结构杆1的轴力为()。
甲向乙借款,甲将自有房屋作抵押。在抵押期间.甲征得乙同意,将房屋卖给了丙,并办理了过户登记手续。下列判断止确的是()。
设直线L:及平面π:4x一2y+z一2=0,则直线L().
本题的要点是表格的建立,表格设置、自动筛选、分类汇总、边框设置等。操作的关键步骤:(1)第(1)问:建好表后,在工作表内移动时使用剪切、粘贴命令。第(2)问:将表格全选中后再复制到sheet2。(2)第(3)~(5)问:字体格式设置
WhatAretheFunctionsofArt?I.Contextoffunctions—ArtistWhereandwhenHisorher【T1】_____【T1】______—Viewer
LetmebegintodaybysayingthattheAmericaneconomyisbasicallyacapitalisticeconomy.Oneoftheimportant【S1】______ofAme
最新回复
(
0
)