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
35
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://jikaoti.com/ti/1iisFFFM
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.
Theaveragepersonseestensofthousandsofimagesaday—imagesontelevision,innewspapersandmagazines,andonthesidesof
Quantumwillstillbeonairasthelastprogramsofitarestillinthemakingandaretobeshownasscheduled.Somemembers
Quantumwillstillbeonairasthelastprogramsofitarestillinthemakingandaretobeshownasscheduled.ABCwillrese
Quantumwillstillbeonairasthelastprogramsofitarestillinthemakingandaretobeshownasscheduled.Quantumislo
Whoisthepersonbeinginterviewed?
Generallyspeaking,aBritishiswidelyregardedasaquiet,shyandconservativepersonwhois【21】______onlyamongthosewit
Asmartmanoncesaidthattheonlythingnecessaryforthetriumphofevilisforgoodmentodonothing.So,asapoliceman,I
Asmartmanoncesaidthattheonlythingnecessaryforthetriumphofevilisforgoodmentodonothing.So,asapoliceman,I
随机试题
女性,60岁,外伤1次,左下肢短缩,足外旋约50度,左髋部压痛,无肿胀,最可能诊断()
共济失调呼吸的损害水平
以下哪个可用作填充剂
给水管网上应设置阀门,当管径小于等于50mm时,宜采用( )。
营业税改征增值税以后,下列项目属于免征增值税的有()。
我国人民币汇率形成机制改革坚持的原则是( )。银行间市场是外汇市场的核心,改革后银行间市场的交易机制包括( )。
一般资料:男性,27岁,已婚,公司职员。求助者主诉:为感情问题痛苦,伴有失眠两个月余。求助者自述:妻子和孩子在家乡,我自己到城里打工,认识了一位女同事,互相有好感,以后经常约会,但是,一个月前,我妻子突然来了,提出来要在城里找工作。我很为难
调查研究法的具体方法包括()。
先用权是指专利申请之前,已有人制造相同产品,或使用相同方法,或已作好制造或使用的必要准备,则在批准申请人的专利权以后,上述人员仍可在原范围内继续制造或使用的权利。国际上一般都把“先用权”当作不能视为侵犯专利权的情况之一。下列不在先用权照顾的情况是(
ATheOrganizationofAnArticleBCheckYourReadingSpeedCAWaytoIncreaseYourReadingSpeedDCheckYourUnderstandin
最新回复
(
0
)