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
Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop
Rescue Platform In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop
admin
2015-08-05
84
问题
Rescue Platform
In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from burning skyscrapers. One【C1】______is a platform capable of flying vertically and hovering in the air【C2】______a helicopter. The platform would rise up and down alongside a skyscraper and pick up people【C3】______in high stories.
The idea for the vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli’s design, 【C4】______the Eagle, calls for two jet engines that【C5】______four large horizontal propellers. The spinning of the propellers【C6】______the necessary lift, or upward force, to raise the platform. The more【C7】______is supplied to the propellers, the higher the platform【C8】______. Moving the platform sideways involves【C9】______differing amounts of power to each propeller.
Helicopters are now used in some【C10】______to get people out of burning buildings. Escape baskets slung from them dangle beside the building for people to climb into. 【C11】______, the baskets cannot reach every floor of a building 【C12】______the ropes from which they hang become unstable【C13】______a certain length.
So far, Metreveli has built a small-scale model of the Eagle to【C14】______his idea. In the wake of September 11 , he has been able to secure enough funding to start building a larger , 4-meter by 4-meter prototype, 【C15】______he calls the Eaglet.
【C5】
选项
A、change
B、move
C、turn
D、shut
答案
C
解析
由下一句的“The spinning of the propellers”可知此处是,需要用两个喷气发动机来推动四个大型水平方向旋转的螺旋推进器。 turn意为“使转动,旋转”。
转载请注明原文地址:https://kaotiyun.com/show/0DQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
From1994to1998thenumberofAmericanswhohaddonatedakidneyreached244.Oneofthereasonswhythenumberofkidneydon
Andthecarsaretestedfordefectsbeforeleavingthefactory.
SomeplantsandanimalsdevelopsuperiorcharacteristicssothattheymayWhichofthefollowingisnotdirectlymentioned?
A.ScientistsdonotknowexactlywhyHepatitisdevelops.B.HepatitisAoftenbreaksoutinfilthyplaceswherefoodandwa
Peoplearoundtheglobehittheheightoftheirmiseryanddepressionin(51)age,anewinternationalstudysuggests.The
FoodSafetyandFoodborneIllnessesFoodsafetyisanincreasinglyimportantpublichealthissue.Governmentsalloverthew
A.beforethecancercellsspreadelsewhereB.themorechancesofdyingofX-rayradiationhewillhaveC.whatismostrespons
A.beforethecancercellsspreadelsewhereB.themorechancesofdyingofX-rayradiationhewillhaveC.whatismostrespons
MiddleAge:ALowPointforMostPeoplearoundtheglobehittheheightoftheirmiseryanddepressioninmiddle【51】______,
HeatandHealthExtremelyhotweatheriscommoninmanypartsoftheworld.Althoughhotweatherjustmakesmostpeoplehot,
随机试题
斜方肌上束的主要功能是()。
妊娠高血压综合征的基本病理变化是()。
患者,男,50岁。突起呼吸困难,咳粉红色泡沫痰,血压25.3/13.3kPa(190/100mmHg)该患者的最佳治疗药物是()
中央处理器的重要作用是运算和显示。()
(操作员:刘主管;账套:101长套;操作日期:2015年1月1日)新增付款条件。付款条件编码:60D付款条件名称:60天到期日期(天):60
甲事业单位为财政全额拨款的事业单位,自2005年起,实行国库集中支付和政府采购制度。经财政部门核准,甲事业单位的10万元以上的物品和服务采购支出实行财政直接支付方式,10万元以下的物品和服务采购支出以及日常零星支出实行财政授权支付方式。甲事业单位需要采购一
历史与现实证明,________。纵观近年来世界各地的纷争,从西亚北非推倒“多米诺骨牌”到美国政府一度停摆,从伦敦、巴尔的摩街头火光冲天的骚乱到极端势力的暴行震惊世界,各国政治危机的相似之处就在于,共识缺失加剧社会裂痕,最终陷入动荡失序。而中国从破除计划经
以下是李丽测量荔枝质量、密度时的若干操作,如下图所示,请你帮助她完成以下实验:测量荔枝质量前,将天平放在水平桌面上,游码移至标尺的______处.
Twofactorsweighheavilyagainsttheeffectivenessofscientificresearchinindustry.Oneisthegeneralatmosphereofsecrecy
A、Itshowsthestructureoftheearth.B、Itleadstonewchanges.C、Itmaynotbetrue.D、Itisanimportantrevolutioninscien
最新回复
(
0
)