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
The opinion of many engineers is that the architects that designed the New York World Trade Center Twin Towers did a good job in
The opinion of many engineers is that the architects that designed the New York World Trade Center Twin Towers did a good job in
admin
2013-05-04
34
问题
The opinion of many engineers is that the architects that designed the New York World Trade Center Twin Towers did a good job in. designing the buildings. The buildings were safe from the hazards (47)______ at the time. Indeed, they were designed to withstand the force of aircraft that might crash into them. They were not however, designed to withstand the effects of the very high temperatures generated by the (48)______ of tons of aviation fuel carried by the aircraft.
Steel (49)______ covered with concrete is the main structural component of the towers and steel loses a lot of structural strength when heated to 1100 degrees Centigrade and beyond, as it was. To (50)______ the steel the towers’ beams were coated with a few centimeters of concrete. That insulation was to provide structural (51)______ for at least 1 hour of fire. The towers met that test. The south tower lasted 62 minutes. The north; 103 minutes. Tragedy followed when not all could escape prior to the collapse.
Most experts agree that the Twin Towers were very well designed. Many also agree that the people planning the attacks were very (52)______ and aimed the aircraft at a height that would effect the most damage. The aircraft crash, and the resulting fuel fed fires were aimed at about the 90th floor. That was just high enough to insure that the upper floors would weaken with the heat and crack down, dropping into the (53)______ part of the building.
The mass of the falling top floors created such a falling load that some experts estimate it (54)______ by 5 to 10 times normal bearing loads. The effect was like a giant hammer, each floor (55)______ more weight to be born by the next floor down.
Were the Trade Towers well designed? Engineers say yes. But the public refers to the belief that architects will never again design a tall building without considering the effects of terrorist attacks of all (56)______ kinds. That not only includes the ability of the structure to withstand attack but the means to allow the buildings’ occupants to escape in time to survive
Word Bank:
A. exceeded I. collision
B. ignition J. contributing
C. strictly K. lightly
D. practical L. knowledgeable
E. integrity M. replace
F. shield N. potential
G. remaining O. happened
H. envisioned
选项
答案
E
解析
本空所填名词应能用structural修饰。混凝土绝缘的作用应是使大楼至少能经受一小时的大火而保持结构完整,因此E. integrity符合题意。
转载请注明原文地址:https://jikaoti.com/ti/fiXFFFFM
0
大学英语六级
相关试题推荐
GameTheory:ClimateTalksDestinedtoFailAmodestlysuccessfuloutcomefromthelatestroundofinternationalclimatecha
Asurveyof16to24yearoldshasfoundthat75%ofthemfeeltheycouldn’tlivewithouttheInternet.Thereport,publishedby
Rescueworkershadcollected820birdsfromtheGulfofMexicooilspill,themajorityofthemalreadydead.Thecurrentspillp
A、Hethoughtthewoman’sbirthdaywasnextweek.B、Therestaurantclosesearlyduringtheweek.C、Thewomanshouldreserveatab
It’sthedreamofmanyanofficedweller:Retireextremelyearlyandtraveltheworldatyourown【C1】______.Butthenyourememb
A、TheU.N.Educational,ScientificandCulturalOrganization.B、TheU.N.FoodandAgricultureOrganization.C、InternationalFun
JuniorCollegeStudentsVS.Undergraduates1.目前专科生就业率高于本科生2.出现这一现象的原因3.我的观点
A、Listenattentively.B、Arguewiththem.C、Focusonthedetails.D、Beabsent-minded.B事实细节题。短文末尾指出,当别人讲话时人们倾向于考虑如何进行反驳,而不是关注讲话人在
Anassumptionthatunderliesmostdiscussionsofelectricfacilitysittingisthattheinitialselectionofasiteistherespon
Duringthewholelife,Jefferson______.Whomightdisliketheideaofarrangingbooksbytheircolors?
随机试题
Ifit______intheearlyApril,thecropswouldn’tbegrowingsowellnow.
A.寒B.暑C.湿D.燥E.火具有损伤阳气、凝滞、主痛特性的是()。
A.医患关系结构的“人机化”趋势B.医患交往的“经济化”趋势C.医患要求的“多元化”趋势D.医患关系调节方式的“法制化”趋势E.医患交往的“和谐化”趋势目前仍较普遍存在的看病责、药费高等问题,反映出
A.心悸气短,动则加剧,胸闷心痛,咳唾痰涎B.喘促气逆,不能平卧,痰稀量多,形寒肢冷C.下肢水肿,喘促气短,形寒肢冷,小便短少D.喘促日久,呼多吸少,面赤躁扰,汗出如珠E.咯痰黄稠,烦躁不安,心烦失眠,口干咽燥充血性心力衰竭心肾阳虚,水饮泛滥证
患者女,62岁,高血压1年。使用降压药时应注意
下列可不作为编制建设工程勘察、设计文件依据的是()。
路边停车带的停车布置方式为()。
人工地基处理的方法主要有()等。
琳琳在学习过程中,缺乏独立性,易受同学影响。当她发现自己的意见和同学们不一致时,往往不能坚持己见。这表明她的认知方式属于()
就要到了,阔别多年的家乡如今又会是一种什么样子?他不禁陷入了对家乡往日风貌的______。
最新回复
(
0
)