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
46
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).
【31】
选项
A、arrested
B、captured
C、held
D、draw
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/MDDd777K
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.
Theaveragepersonseestensofthousandsofimagesaday—imagesontelevision,innewspapersandmagazines,andonthesidesof
Quantumwillstillbeonairasthelastprogramsofitarestillinthemakingandaretobeshownasscheduled.ABCprograms
Whoisthepersonbeinginterviewed?
Whatwasthewomandoingwhenthepolicemanfoundher?
ApersonbecomespartoftheChristiancommunitythroughbaptism—itisamatterofchoice【21】______birth.TheChristiancom
Theperiodofadolescence,i.e.,thepersonbetweenchildhoodandadulthood,maybelongorshort,dependingonsocialexpect
AuniversitystudentinNairobi,Kenya,wasstoppedforatrafficviolationtheotherday.Thepolicemantookouthisticketboo
随机试题
己知企业只生产一种产品,单位变动成本为每件45元,固定成本总额60000元,产品单价为120元,为使安全边际率达到60%,该企业当期至少应该销售的产品为()件。
2016年3月,张某(男,35岁)因涉嫌盗窃被公安机关抓获。公安机关经过研究发现张某系生活不能自理的人的唯一扶养人,故决定对张某采取监视居住的强制措施,并交由张某家所在的居委会执行。居委会将张某关押张某家内,不许张某随意外出,但允许张某因生活需要而外出购物
关于磁共振图像矩阵的描述,正确的是
卫气的生理功能包括
下列各项中,属于抵押权人的权利的有()。
下列不属于商业银行开展的中间业务的是()。
关于乳母营养,下列陈述不科学的是()。
青少年社会工作一般分为()几个层面。
阅读下面的教学反思(节选),按要求答题。今天教授《窦娥冤》,我先让学生分角色诵读。扮演监斩官、刽子手和卜儿(蔡婆婆)的三个同学都读得很好,扮演窦娥的同学由于不熟悉台词,读得要差一些,但丝毫不影响大家的积极性。学生诵读“端正好”、“滚绣球”,学生们
Mandependsonwaterformanythings.Heneedsitfordrinking.Heneedsitforgrowingfood.Heneedsitforkeepinghimselfcl
最新回复
(
0
)