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
A、To carry information that would help determine elevation B、To provide accurate weather reports C、To relay information from sci
A、To carry information that would help determine elevation B、To provide accurate weather reports C、To relay information from sci
admin
2004-12-30
56
问题
Not long ago, some of you may have read about the team of mountain climbing scientists who helped to recalculate the elevation of the highest mountain in the world, Mount Everest(珠穆朗玛峰). Of cause the elevation of Mount Everest was determined many years ago using traditional surveying methods. But these scientists wanted to make a more precise measurement, using a new method that takes advantage of recent advances in technology; it’s called the Global Positioning System. The Global Positioning System uses 24 satellites that circle the earth. Each of the satellites is constantly sending out signals, and each signal contains important information that can be used to determine the longitude, latitude and elevation at any point on the earth’s surface. Well in order to use the system to calculate amount of Everest’s elevation. Scientists need to put a special receiver on the summit to receive signals from the satellites. The problem with this was that in the past, the receivers were much too heavy for climbers to carry. But now these receivers have been reduced to about the size and weight of a hand-held telephone, so climbers were able to take the receiver to the top of the Everest, and from there, to access the satellite system signals that would allow them to determine the precise elevation. And it turns out that the famous peak is actually a few feet higher than us previously thought.
选项
A、To carry information that would help determine elevation
B、To provide accurate weather reports
C、To relay information from scientists around the world
D、To indicate which route the mountain climbers should take
答案
A
解析
In the study described, how were satellite signals used?
转载请注明原文地址:https://kaotiyun.com/show/d78O777K
0
托福(TOEFL)
相关试题推荐
Youshouldspendabout20minutesonQuestions27-40,whicharebasedonReadingPassage3below.Aneur
Completethesummaryusingthelistofwords/phrases,A-l,below.ProblemsforpreschoolusersofvideogamesPr
Music:LanguageWeAllSpeakSectionAMusicisoneofthehumanspecie’srelativelyfewuniversalabilities.Withoutformaltra
TacklingHungerinMsekeniATherearenotenoughclassroomsattheMsekeniprimaryschool,sohalfthelessonstakeplaceinth
Lookatthefollowingstatements(Questions19-23)andthelistofscientistsbelow.Matcheachstatementwiththecorrectscien
LivingDunesWhenyouthinkofasanddune,youprobablypictureabarrenpileoflifelesssand.Butsanddunesareactuallydyn
【21】Whichisthemostrecentspecies?
JoannesaysthatvisitorstoDarwinareoftensurprisedby
Listenandcompletetheinformationbelow.Howmuchdoesthemanneedtopayforthebustickets?$______
A、Leavehergarbagecansathishouse.B、Findoutwhenthetruckcomesby.C、PrepareforaTuesdaypickup.D、Putthegarbageout
随机试题
A.从绝经前一段时间,出现与绝经有关的内分泌、生物学改变及临床特征时到绝经后12个月B.绝经前的整个生殖期C.由于卵巢功能丧失而使月经永远的停止,要连续闭经12个月,同时没有明显的病理改变或其他的生理原因D.指最后一次月经后的时期,至生命的终结E.
窝沟龋中最多的致龋菌为
发热为午后夜间低热,其病机是
起重机的吊钩危险断面的磨损量达到原来的()时,应及时报废,绝对不可采取补焊的办法来增大断面面积。
组织部门接到举报,表示某国有企业单位负责人胡某在任职期间有违法行为,经过该地区财政、审计、统计方面组成的联合调查组的全面考察,发现:(1)该公司设置大小两套账,大账对外,小账对内。(2)两个月前,打击压制坚持原则的会计工作人员郑某,将其
评价利润中心业绩时,不适合部门经理的评价,而更适合评价该部门业绩的评价指标是()。
下面乐段中,除运用了并列单二部曲式之外,还具备哪种创作手法?()
下列句子中,对“不夸己能,不扬人恶,自然能化敌为友”理解正确的是()。
Goodadviceislikemedicineforthesoul.Whatkindof【C1】______haveyourecentlyreceived?Whodoyougotogeladvice?Doyou
教师进行教学工作的基本程序有()
最新回复
(
0
)