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
74
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).
【25】
选项
A、constitute
B、include
C、compose
D、consist
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/lDDd777K
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.
InFrance,allschoolsfollowthesamebasiccurriculum.Therearequiteafewafter-schoolprogramsafter4:30pm.
Quantumwillstillbeonairasthelastprogramsofitarestillinthemakingandaretobeshownasscheduled.ABCwillrese
Whatwasthewomandoingwhenthepolicemanfoundher?
Whatwasthewomandoingwhenthepolicemanfoundher?
Whatwasthewomandoingwhenthepolicemanfoundher?
Asmartmanoncesaidthattheonlythingnecessaryforthetriumphofevilisforgoodmentodonothing.So,asapoliceman,I
随机试题
羟喜树碱抗癌药是()
(2011年第151题)存在于肺泡内液气界面的肺表面活性物质的生理意义有
患者,女,50岁。近来多食、消瘦、易怒,双侧甲状腺肿大,心率115次/分。下列哪项检查具有诊断意义
文大妈退休前是单位的领导,而自退休后到现在心情一直十分低落,以前好交朋友的她现在既不与老朋友来往,也不愿去结识新的朋友,甚至经常一个人呆在家里唉声叹气。从这些情况来看,文大妈遇到了()等老年期问题。
阅读下面这首唐诗,完成问题。别舍弟宗一①柳宗元零落残魂倍黯然,双垂别泪越江边。一身去国六千里,万死投荒十二年。桂岭瘴来云似墨,洞庭春尽水如天。欲知此后相思
研究人员对716名平均年龄为82岁的志愿者进行研究,要求志愿者佩戴一个小型仪器以监控日常活动,还对他们进行认知水平测试,评估记忆力和思维能力。大约3年后,研究人员发现,日常活动最少的志愿者罹患痴呆症的几率是日常活动最多的志愿者的两倍多。因此,洗衣、做饭、打
[2011年]设A为三阶矩阵,将A的第2列加到第1列得到矩阵B,再交换B的第2行与第3行得到单位矩阵,记则A=().
下列描述中正确的是
ReadthearticlebelowabouttheInternettoday.ChoosethebestwordtofilleachgapfromA,B,CorD.Foreachquestion21-3
Industrialsafetydoesnotjusthappen.Companies【C1】______lowaccidentratesplantheirsafetyprograms,workhardtoorganize
最新回复
(
0
)