首页
登录
学历类
Text3 NASA has hired airplane manufactur
Text3 NASA has hired airplane manufactur
考试题库
2022-08-02
32
问题
Text3 NASA has hired airplane manufacturer Lockheed Martin to build its next experimental plane,which is designed to fly faster than the speed of sound without producing the loud sonic booms that have plagued the transportation form.The plane is due to be delivered in 2021 and will cost just shy of$250 million.During a press conference hosted by the agency during which they announced the partnership,Lockheed Martin spokesperson Dave Richardson explained that the new plane will be neither a prototype for a new commercial airplane,nor a reincamation of previous supersonic jets."This is a purpose-built experimental research craft,"he said."This aircraft was designed from a clean sheet."NASA will use the plane to gather data about the impact ofits low-boom design,which the agency hopes will address the single biggest challenge of supersonic flight.Flying faster than the speed of sound produces shock waves that result in a loud booming sound."The air does not know that the airplane is coming,"Peter Coen,a NASA project manager for supersonic technology,explained during the press conference,Because no one liked hearing that noise,the Federal Aviation Administration and similar international organizations banned supersonic travel over land,Now,NASA thinks technology can break the sound barrier without being quite so loud about it.The secret is in the shape of the plane.Sonic booms form because the plane's flight produces many shock waves of different strengths headed in different directions that absorb into each other to create two strong pulses of pressure.From the testing done so far,NASA thinks the new plane's design successfully dissipates and weakens those shock waves,keeping them from forming the strong pulses responsible for booms.The plane would still produce what they've dubbed"sonic thumps,"but the hope is that those would be much easier to deal with.Once the new plane is built,NASA will run surveys on the ground to see how people respond to the sonic thumps.Then,the agency will bring that survey data to the Federal Aviation Administration and its intemational counterparts in order to revisit the rule about breaking the speed of sound over land."It's not about making a new airplane for airplanes'sake,although I love airplanes,"Richardson said."It's about the data that will be collected."If the rule change does come through,that could kick off a new era of commercial supersonic travel.31.According to the first two paragraphs,the experimental planeA.will need an exact budget of$250 million.B.will be put into service in 2021.C.is designed from an entirely new angle.D.is based on a new commercial purpose.
选项
A.will need an exact budget of$250 million.
B.will be put into service in 2021.
C.is designed from an entirely new angle.
D.is based on a new commercial purpose.
答案
C
解析
事实细节题。根据题干定位到文章第一段和第二段。第二段提到这架新飞机既不是新商用飞机的原型,又不是以前超音速飞机的再生,是一种全新的设计,C项符合文义,故C项为正确选项。【干扰排除】第一段最后一句提到这架飞机将于2021年交付,费用将略低于2.5亿美元.A项中的exact-词与原文不符;B项中的put into seⅣice与deliver意思不符;文章第二段提到新的飞机不是新的商用飞机的原型.D项与原文不符。故均排除。
转载请注明原文地址:https://tihaiku.com/xueli/2697666.html
本试题收录于:
英语一研究生题库研究生入学分类
英语一研究生
研究生入学
相关试题推荐
ThedeclineinAmericanmanufacturingis
ThedeclineinAmericanmanufacturingis
ThedeclineinAmericanmanufacturingis
ThedeclineinAmericanmanufacturingis
ThedeclineinAmericanmanufacturingis
Text3NASAhashiredairplanemanufactur
Text3NASAhashiredairplanemanufactur
Text3NASAhashiredairplanemanufactur
Text3NASAhashiredairplanemanufactur
Text3NASAhashiredairplanemanufactur
随机试题
Thefrownontheman’sfaceshowedthathewasdispleased.A、lookoffearB、look
Thankstothemeansofmoderntransportationandcommunication,theworldisget
StudyActivitiesinUniversityInordertohelpcoll
设X,Y为两个随机变量,E(X)=E(Y)=1,D(X)=9,D(Y)=1,且则
正常骨髓象全片可见巨核细胞A.10~25个 B.25~35个 C.5~15个
2020年5月7日、国家工业信息安全研究中心AI研发总部基地项目揭牌,新加坡南
当项目建成后用于出租经营时,由于经营期限很长,计算开发成本利润率就显得意义不大,
下列应设消防给水系统的是()。A.加油站 B.液化石油气加气站 C.压缩天
2014年,全国资助学前教育(幼儿)、义务教育、中职学校、普通高中和普通高校学生
投资项目评价用的建设期是()所需的时间。 A.从项目有投资意向起到项目建成投
最新回复
(
0
)