首页
登录
职称英语
The score is tied in the second half of the World Cup finals, and aboard a 7
The score is tied in the second half of the World Cup finals, and aboard a 7
游客
2025-05-09
13
管理
问题
The score is tied in the second half of the World Cup finals, and aboard a 747, passengers cheer as they watch the game on their laptops-40,000 feet above Earth. Sound futuristic?
Boeing Plans to make this scenario possible with its broadband telecommunications initiative, Connexion by Boeing. This service will allow fliers to surf the Web, send and receive email, access the company internet, book dinner reservations trade the honest stock, shop-online and watch live TV from any seat in an aircraft.
Connexion is already available on private jets, and Boeing says that the two-way broadband service will be installed on domestic flights in late 2001. Global coverage is slated to arrive by 2005. Subscribers will be able to access Connexion from their seats using laptops or personal digital assistants, plus a network card and a cable provided by the airline. The cost? Comparable to ground-floor cellular phone service; between $ 6 and $ 25 an hour.
One key enabler for this technology is a phased-array antenna, originally developed by Boeing in 1986. Located on the aircraft’s upper fuselage, the antenna electronically transmits beams to a satellite at 1.5 Mb per second and receives them at 5 Mb per second. Thus, every passenger can access Connexion concurrently, securing connection speeds of no less than 56 Kb per second each. The actual bandwidth will be continually upgraded.
Boeing ultimately wants to bring the service to markets like cruise ships and oil exploration plat- forms. Until then, the sky’ s the limit. [br] Which of the following statements about Connexion is FALSE?
选项
A、Boeing planes worldwide will have this service by 2005.
B、The service will cost between $6 and $25 an hour.
C、The phased-array antenna is an important aspect of Boeing’ s new service.
D、The service on works at speeds of less than 1. S Mb per second.
答案
D
解析
第四段对该项服务的工作好进行了详细介绍:乘客可获得connection speeds of no less than 56 Kb per second each,选项D所说的1.5 Mb per second是天线传输卫星信号的速率,不是乘客所得服务的速率。
转载请注明原文地址:https://tihaiku.com/zcyy/4068582.html
相关试题推荐
ThescoreistiedinthesecondhalfoftheWorldCupfinals,andaboarda7
ThescoreistiedinthesecondhalfoftheWorldCupfinals,andaboarda7
ThescoreistiedinthesecondhalfoftheWorldCupfinals,andaboarda7
OnthefirstdayofmysecondyearatCaliforniaStateUniversityatSacrame
OnthefirstdayofmysecondyearatCaliforniaStateUniversityatSacrame
AlanTaylor’ssecondfeature,TheEmperor’sNewClothes,isawildleapfrom
AlanTaylor’ssecondfeature,TheEmperor’sNewClothes,isawildleapfrom
AlanTaylor’ssecondfeature,TheEmperor’sNewClothes,isawildleapfrom
Totallyperplexedbythefirstquestionontheexam,hepassedontothesecond.
Aftersometimethesecondstageofthespaceshuttle,havingusedupitsfuel,
随机试题
在我国,下列成本费用中()属于管理成本的内容。A.车间管理人员的工资 B.广告
如图所示,在平板和受拉螺栓之间垫上一个垫圈,可以提高:A.螺栓的拉伸强度 B.
冠心病患者不必限制的膳食是A.刺激性食物 B.含单糖和双糖高的食物 C.高胆
当前学前儿童科学教育的内容,主要包括______、______、______、_
下列属于银行间债券市场中长期债券信用等级的是( )。 Ⅰ.CCC Ⅱ.D
下面关于分业经营的说法,正确的有()。A:商业银行不能从事有价证券的买卖、中介、
中国梦视野宽广、内涵丰富、意蕴深远。中国梦的本质是_____。A.国家复兴、民族
()是课外、校外活动的主体。 A.学生集体和个人B.学生集体 C.
根据会计法律制度规定,下列各项中,不属于会计核算内容的是()。A.合同的审核和签
关于因果分析图法应用的说法,正确的是()。A.一张因果分析图可以分析多个质
最新回复
(
0
)