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 expanding International Space Station has living space, a laboratory, storage modules and solar power panels. Now it will ge
The expanding International Space Station has living space, a laboratory, storage modules and solar power panels. Now it will ge
admin
2010-06-18
44
问题
The expanding International Space Station has living space, a laboratory, storage modules and solar power panels. Now it will get a backbone. The space shuttle Atlantis is set to take off for the station with a huge truss crammed into its cargo bay. The goal of the l l-day mission is to attach the central part of what will eventually become a support beam for the station.
The truss is made up of metal crossbars and filled with wiring, pipes, computers and other equipment. It is to be attached to the station during four spacewalks by the seven-member crew. The astronauts will also attach a mobile transport platform to tracks atop the truss, the first part of a 300-foot (100-meter) mini-railroad that will carry a robotic arm and crew members back and forth across the station on future construction and repair jobs.
Atlantis’s 25th flight will be the first in the 21-year history of the shuttle program for which the National Aeronautics and Space Administration will delay announcing the precise launching time for a civilian mission. Citing heightened security since Sept. 11, the agency said that liftoff would occur between 2 and 6 p.m. and that it would not announce the official time until 24 hours before the flight.
Before launching, NASA must determine that he 58-foot Canadian - built robot arm attached to the station is operating properly, since it will be critical in installing the truss. The multijointed Canadarm 2, as it is called, was installed last April and has since experienced periodic problems. In some operations recently, the brake on one of the arm’ s seven joints has not released properly, causing it to malfunction.
To work around the problem, Canadian engineers wrote new computer software to operate the arm with six joints. The three-member resident crew at the station is testing the new operating procedures for installing the truss. If the software patch fails, the mission could be delayed several days until the problems are worked out.
Adding the center truss element begins a new phase for the $ 60 billion station, a 16-nation project led by the United States in cooperation with Russia, Japan, Canada and members of the European Space Agency. Over the next two years, six other girder sections will be added to serve as the home for four giant solar power arrays, heat radiators and other equipment that must be in place before attaching science modules from other nations.
Which of the following is NOT true of Canadarm 2?
选项
A、It has seven joints.
B、It is going to be installed in the proposed mission.
C、One of its brakes does not function properly.
D、A new computer program is being tried out on it.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/LxlO777K
0
专业英语八级
相关试题推荐
BengtHolmstrom,aprofessoratMIT,isslatedtoacceptaNobelPrizeineconomicsnextmonthforhispath-breakingcontributio
Britain’scybercrimetsaristoaskthegovernmentforaprogrammebasedonitscontroversialcounter-radicalisationstrategyto
Whencanthedroughtbeexpectedtoend?Thedroughtispredictedtocause______toTexasagribusiness.
WhatisthepurposeofProfessorMcKay’sreport?
Thedigitalrevolutioninconsumerelectronics,includingpersonalcomputergadgets,begantogainmomentumin1998,andisexpe
OppositiontotheVietnamWarintheUnitedStatesdevelopedimmediatelyafterthebeginningofthewar,chieflyamongtradition
TheSeattletimesCompanyisonenewspaperfirmthathasrecognizedtheneedforchangeanddonesomethingaboutit.Inthenews
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitudes.Emotionalreactionsaswellaslogicalthought
随机试题
男性,35岁,3个月来低热、盗汗、消瘦,1个月来劳累后气短。查体:T37.6℃,右下肺触觉语颤减弱,叩诊呈浊音,呼吸音消失。心尖搏动向左移位,心音正常,心率98次/分,律整,无杂音,超声示右侧胸腔中等量积液。(2007年第176题)对患者进行初步诊断
本病人最可能的诊断是流行性出血热患者第4病日发热期,在治疗上主要措施
急性腹膜炎发生休克的主要原因是
水文地质勘察表明,地下5~10m之间为一含水层,透水性良好,拟以该含水层作为水源,取水构筑物可选用()。
债券的发行价格可分为()。Ⅰ.平价发行Ⅱ.溢价发行Ⅲ.折价发行Ⅳ.定向发行
某副食品商店为增值税小规模纳税人,2015年8月销售副食品取得含税销售额66950元,销售自己使用过的固定资产取得含税销售额17098元。该商店应缴纳的增值税为()。
钙钛矿型复合氧化物是一种具有独特物理性质和化学性质的新型无机非金属材料。下列关于钙钛矿的说法,不正确的是:
甲乙丙分别骑摩托车、乘大巴、打的从A地去B地。甲的出发时间分别比丙早15分钟、20分钟,到达时间比乙丙都晚5分钟。已知甲乙的速度之比是2:3,丙的速度是60千米/小时,则AB两地间的距离是()。
联系实际,结合热点公共事件谈谈网络媒体的舆论监督作用。(电子科技大学,2010)
某系统集成公司最近承接了一个系统集成项目,客户方是某省电信分公司。客户方的大企业服务历经多年的发展,已经开发了很多接口系统。这次承接的系统集成项目是要将这些接口系统集中到一个总线式的中间件软件上,客户方出具了系统功能要求清单作为合同的附件。该系统
最新回复
(
0
)