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
考研
With Airbus’s giant A380 airliner about to take to the skies, you might think planes could not get much bigger and you would be
With Airbus’s giant A380 airliner about to take to the skies, you might think planes could not get much bigger and you would be
admin
2010-02-22
107
问题
With Airbus’s giant A380 airliner about to take to the skies, you might think planes could not get much bigger and you would be right. For a given design, it turns (1)_____, there comes a point where the wings become too heavy to generate (2)_____ lift to carry their own weight. (3)_____ a new way of designing and making materials could (4)_____ that problem. Two engineers (5)_____ University College London have devised an innovative way to customise and control the (6)_____ of a material throughout its three dimension al structure.
In the (7)_____ of a wing, this would make possible a material that is dense, strong and load-bearing at one end, close to the fuselage, (8)_____ the extremities could be made less dense, lighter and more (9)_____. It is like making bespoke materials, (10)_____ you can customise the physical properties of every cubic millimetre of a structure.
The new technique combines existing technologies in a(n) (11)_____ way. It starts by using finite-element-analysis software, of the type commonly used by engineers, (12)_____ a virtual prototype of the object. The software models the stresses and strains that the object will need to (13)_____ throughout its structure. Using this information it is then (14)_____ to calculate the precise forces acting on millions of smaller subsections of the structure. (15)_____ of these subsections is (16)_____ treated as a separate object with its own set of forces acting on it—and each subsection (17)_____ for a different microstructure to absorb those local forces.
Designing so many microstructures manually (18)_____ be a huge task, so the researchers apply an optimisation program, called a genetic algorithm, (19)_____. This uses a process of randomisation and trial-and-error to search the vast number of possible microstructures to find the most (20)_____ design for each subsection.
选项
A、asks
B、calls
C、demands
D、requires
答案
B
解析
本题的考点为动词的词义及用法辨析。该句表达的意思是"每个小单位 ______一种不同的微观结构来吸收那些局部的力",所以calls,call for"需要,要求",符合题意。asks,ask for"请求",不符合文意;demands"要求"和requires"需要"为及物动词,都不能与for搭配。因此这三项都不正确。
转载请注明原文地址:https://kaotiyun.com/show/Mz44777K
0
考研英语一
相关试题推荐
[A]Providehealthcareinsurance[B]Implementeconomicalplansinrecovery[C]Increaseincomeforlower-incomeAmericans[D]
[A]Providehealthcareinsurance[B]Implementeconomicalplansinrecovery[C]Increaseincomeforlower-incomeAmericans[D]
AsmillionsofAmericanjobsdisappearedoverthepastfewmonths,insomecasesforever,therewasone【C1】________forthenewly
AsmillionsofAmericanjobsdisappearedoverthepastfewmonths,insomecasesforever,therewasone【C1】________forthenewly
StateandlocalauthoritiesfromNewHampshiretoSanFranciscohavebegunbanningtheuseoffacial-recognitiontechnology.The
Inasweepingoverallinspectionofits$21billionMedicaidprogram,theFloridaLegislatureapprovedabilltoshiftnearlyth
YawningcanbeaproblemattheofficeforLindsayEierman,whichmakesherembarrassed."I’veexplained,’I’msorry,Ididn’
Sevenyearsago,whenIwasvisitingGermany,Imetwithanofficialwhoexplainedtomethatthecountryhadaperfectsolution
WithAirbus’sgiantA380airlinerabouttotaketotheskies,youmightthinkplanescouldnotgetmuchbiggerandyouwouldbe
随机试题
可造成永久性秃睫的疾病为
影响牙周疾病流行的因素不包括
( )是占用资金所附代价或放弃使用资金所获报酬,是资金时间价值的表现形式。
下列关于劳动争议解决的说法,正确的是()。
下列不属于民办非企业单位行业分类的是()。
一位同学在斯坦福一比纳量表上测得智商为105,这位同学属于()。
Youwillhearfivepeoplegivingtheiropinionsonspankingchildren.Forquestions9-13,choosefromthelistA-Fwhateac
PassageThreeAbustookhimtotheWestEnd,where,amongthecrazycolouredfountainsofillumination,shatteringtheblue
Theevidentincreaseofthevarietyandamountofthedailyconsumptionitemsandimportedfoodproductshaveconsiderablyincre
HowisInternetaddictiondifferentfromcigaretteordrugaddiction?
最新回复
(
0
)