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
专升本
Many strange new means of transport have been developed in our century, the strangest of them being perhaps the hovercraft. In 1
Many strange new means of transport have been developed in our century, the strangest of them being perhaps the hovercraft. In 1
admin
2011-06-28
26
问题
Many strange new means of transport have been developed in our century, the strangest of them being perhaps the hovercraft. In 1953, a former electronics engineer in his fifties, Christopher Cockerell, who had turned to boat-building on the Norfolk Broads, suggested an idea on which be had been working for many years to the British government and industrial circles. It was the idea of supporting a craft on a "pad", or cushion, of low-pressure air, ringed with a curtain of higher pressure air. Ever since, people have had difficulty in deciding whether the craft should be ranged among ships, planes, or land vehicles—for it is something in between a boat and an aircraft. As a ship builder, Cockerell was trying to find a solution to the problem of the wave resistance which wastes a good deal of a surface’s power and limits its speed. His answer was to lift the vessel out of the water by making it ride on a cushion of air, no more than one or two feet thick. This is done by a great number of ring-shaped air jets on the bottom of the craft. It "flies", therefore, but it cannot fly higher—its action depends on the surface, water or ground, over which it rides.
We may conclude from reading the passage that ______.
选项
A、a hovercraft can not fly high because of the surrounding high-pressure air
B、a hovercraft is as much in use as a plane
C、a hovercraft "flies" with a greater speed than ships
D、a hovercraft also has the problem of wave resistance
答案
C
解析
本题属细节推理题。A项中的“high-pressure”错了,应是“low-pressure”;B项中的“as a plane”错了,它不是飞机;D项中的问题已经得到解决。
转载请注明原文地址:https://jikaoti.com/ti/qm3GFFFM
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
RulonGardnerwon______.ThepeoplefromAltonwere______.
Onetypeofpersonthatiscommonineverycountryistheonewho______.Accordingtothepassage,itisbetterforonewitha
(Regardlessofyourage),youcanmakeanumberofimportantchangesinyourcurrentlifestylethatcanhelpyoutobecomeheal
Butinrecentyearsithasbecomemoreandmoreevidentthatthispursuithasledtoa"bravenewworld"ofconsumergoodsands
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofraysfromthesunandotherstars.Theatmosphe
ThedoctorfeltJohn’sarmto______ifthebonewasbroken;
Devon,17,isusedtopayingherowncellphoneandcarexpenses.Butlatelyit’sbeenharder.Thefamilyshebaby-sitsforhasn
Amongallthefastgrowingscienceandtechnology,theresearchofhumangenes,orbiologicalengineeringaspeoplecallit,is
Greenspacefacilitiesarecontributingtoanimportantextenttothequalityoftheurbanenvironment.Fortunatelyitisnolong
Therearemanycommonlyheldbeliefsabouteyeglassesandeyesightthatarenotprovenfacts.Forinstance,somepeoplebelieve
随机试题
耳聋耳鸣虚证的治疗原则为
郁金的功效是()栀子的功效是()
案情:甲有限责任公司在2006年为了提高工人的积极性,发行了公司内部职工股。2011年,公司决定让部分职工退股,并将其本金连同当年利息一并返还。在甲公司经营过程中,因业务开展顺利,董事会决定,即日起正式实施以下方案:①以甲公司名义投资1
某项目不确定性因素为建设投资、运营负荷、销售价格和原材料价格,如果这四个因素分别向不利方向变化20%、15%、7%和10%,项目的财务内部收益率均等于财务基准收益率,该项目最敏感的因素是()。
下列指标中,不属于建筑钢材拉伸性能的是()。
项目法人应当根据大中型水利水电工程建设的要求和移民安置规划,在每年汛期结束后()日内,向与其签订移民安置协议的地方人民政府提出下年度移民安置计划建议。
《美育书简》的作者是______。
Windows2003对备份文件在备份后不做标记的备份方法是()。
Changethefirstwordintothelastword,bychangingoneletteratatimeandmakinganew,differentwordinthemiddle.PINE_
EconomizingofthePoorComprehendingEconomizingofthePoorWalkingdowntheaislesofasupermarket,low-incomesho
最新回复
(
0
)