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
Boeing Co’s Sonic Cruiser, a proposed faster airliner, would be mostly blended material, program director Walt Gillette said rec
Boeing Co’s Sonic Cruiser, a proposed faster airliner, would be mostly blended material, program director Walt Gillette said rec
admin
2010-07-06
59
问题
Boeing Co’s Sonic Cruiser, a proposed faster airliner, would be mostly blended material, program director Walt Gillette said recently. In its quest for the 【21】______ to fly 15 to 20 per cent faster than 【22】______ airliners, the US company says about 60 per cent of the new plane’s 【23】______ , including the wing, would be a carbon-fiber-reinforced composite material that is lighter than aluminum for the same 【24】______ . "Composites would 【25】______ almost all of the airplane that you could see from the outside," Gillette said. Composites are well regarded among aeronautical engineers and have been in 【26】______ use since the 1970s. Each generation of planes has more composites, and Gillette 【27】______ that about 10 per cent of Boeing’s 【28】______ civil aircraft, the early-1990s 777, is built 【29】______ the material. 【30】______ still only a proposal, the Sonic Cruiser has 【31】______ the interest of many airlines, which expressed unusual enthusiasm for the aircraft 【32】______ the September 11 attacks forced most of them to scale back operations. When Boeing 【33】______ the Sonic Cruiser last year it said the plane might enter service 【34】______ 2006 and 2008. Gillette said the 【35】______ date now is 2008, by which time the market and technology are expected to have developed 【36】______ Wind-tunnel tests 【37】______ the company’s computer calculations of optimal cruising speed for the plane at 95 to 98 per. cent of the speed of sound. Going faster than sound would use too much fuel and 【38】______ great 【39】______ on the aircraft’s engines. Gillette said the Sonic Cruiser 【40】______ be offered as a family of aircraft with 200 to 250 seats and a range of 6,500 to 9,000 nautical miles (12,000 to 16,700 kilometers).
【24】
选项
A、power
B、fight
C、tension
D、strength
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/eDDd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Quantumwillstillbeonairasthelastprogramsofitarestillinthemakingandaretobeshownasscheduled.
Quantumwillstillbeonairasthelastprogramsofitarestillinthemakingandaretobeshownasscheduled.
Quantumwillstillbeonairasthelastprogramsofitarestillinthemakingandaretobeshownasscheduled.
Theaveragepersonseestensofthousandsofimagesaday—imagesontelevision,innewspapersandmagazines,andonthesidesof
Theaveragepersonseestensofthousandsofimagesaday—imagesontelevision,innewspapersandmagazines,andonthesidesof
Whoisthepersonbeinginterviewed?
Whatwasthewomandoingwhenthepolicemanfoundher?
ApersonbecomespartoftheChristiancommunitythroughbaptism—itisamatterofchoice【21】______birth.TheChristiancom
Asmartmanoncesaidthattheonlythingnecessaryforthetriumphofevilisforgoodmentodonothing.So,asapoliceman,I
随机试题
下列物质既是饱和一元醇,又属脂肪醇的是()。
产生房水的器官是
在医院调剂室,药士从事的工作主要是
假设开发法是一种科学实用的估价方法,其基本理论依据与()相同。
2005年1月1日试行首次公开发行股票询价制度。按照中国证监会的规定,首次公开发行股票的公司应通过向其保荐人询价的方式确定股票发行价格。()
与个人理财业务相关的行政法规有()。
既能丰富培训对象的工作经历,也能较好地识别培训对象的长处和短处的培训方式是()。
(2016·山东)有意义的学习既受学习资料性质的影响,也与学习者自身原有的认知结构有关。()
狐獴习惯性地徘徊在山上的小河边,在小河附近经常能发现狐獠喜好食用的野生苔藓。因为小河散发出某种微弱的特殊气味,生物学家得出结论:狐獴通过嗅觉来定位小河,从而发现野生苔藓。下面哪一项,如果正确,最能反驳科学家的结论?
OlympicGamesareheldeveryfouryearsatadifferentsite,inwhichathletes【21】differentnationscompeteagainsteachotheri
最新回复
(
0
)