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
111
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、possible
B、impossible
C、likely
D、unlikely
答案
A
解析
本题的考点为近义形容词的用法辨析。结合各项及上下文的内容可知,这里表达的意思是"通过使用这种信息,就有可能计算出作用在数百万更小单位构造上的精确的作用力",所以possible"可能的",指由于有适当的条件和方法,某事可能发生或做到,强调客观上有可能,但常含有实际希望很小的意思,符合题意。impossible"不可能的"和unlikely"不太可能的"都不符合文中的意思;likely"可能的",为常用词,指从表面迹象来看很有可能。因此这三项都不符合题意。
转载请注明原文地址:https://kaotiyun.com/show/Sz44777K
0
考研英语一
相关试题推荐
AsmillionsofAmericanjobsdisappearedoverthepastfewmonths,insomecasesforever,therewasone【C1】________forthenewly
SupposeyouarestudyinginWashingtonUniversity.Youlostyourpassportbyaccidentyesterday.WritealettertotheChineseE
Bigcompaniesswallowlittleoneseveryday.Sothe【C1】________onMarch25thbyYahoo(annualrevenue,$5billion)ofSummly,a
Bigcompaniesswallowlittleoneseveryday.Sothe【C1】________onMarch25thbyYahoo(annualrevenue,$5billion)ofSummly,a
Inasweepingoverallinspectionofits$21billionMedicaidprogram,theFloridaLegislatureapprovedabilltoshiftnearlyth
YawningcanbeaproblemattheofficeforLindsayEierman,whichmakesherembarrassed."I’veexplained,’I’msorry,Ididn’
TheEconomistcalculatesthataroundtheworldalmost290million15-to24-year-oldsareneitherworkingnorstudying:almosta
WithAirbus’sgiantA380airlinerabouttotaketotheskies,youmightthinkplanescouldnotgetmuchbiggerandyouwouldbe
WithAirbus’sgiantA380airlinerabouttotaketotheskies,youmightthinkplanescouldnotgetmuchbiggerandyouwouldbe
随机试题
下面哪种情况不需要同时评价肾段动脉的阻力指数
多形红斑的表皮组织病理学改变特征正确的是
患者,男性,20岁,反复出现面部、胸部皮疹伴有疼痛不适感2年余,且皮疹夏季和在进食刺激性食物后症状明显。体检面部和胸部多发部位油性皮脂溢出,粉刺、丘疹、脓疱、脓肿、囊肿及窦道、瘢痕、瘢痕疙瘩等多种皮损集簇发生。损害的大小深浅不等,触疼明显。导致此病的发
A.细菌B.病毒C.真菌D.原虫E.支原体鹅口疮的病原体是()。
男性,35岁,体重60kg。烧伤总面积为60%。伤后第一个8小时所需晶、胶体量是
A.球形心B.靴形心C.梨形心D.绒毛心E.虎斑心扩张型心肌病
按现行增值税法规定,下列货物中适用13%税率的有()。
简述北魏孝文帝改革的主要内容。
中小学常用的板书,一般包括板书、板画两种形式。()
Thebuilding______nowwillbeamodemshoppingmall.
最新回复
(
0
)