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、The advantages of traditional surveying methods. B、Using satellites to communicate with mountain climbers. C、Obtaining new inf
A、The advantages of traditional surveying methods. B、Using satellites to communicate with mountain climbers. C、Obtaining new inf
admin
2009-04-23
29
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. Of course 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 Glob al 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 a mount 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、The advantages of traditional surveying methods.
B、Using satellites to communicate with mountain climbers.
C、Obtaining new information about a mountain.
D、Controlling satellites from the top of a mountain.
答案
C
解析
What is the talk mainly about?
转载请注明原文地址:https://kaotiyun.com/show/1fR7777K
0
大学英语四级
相关试题推荐
A、Theycouldmovearoundthecountry.B、Theycouldfast-tracktheirbusiness.C、Theypaidattentiontotheirpurposes.D、Theygo
A、Sheshotachildonastreet.B、Shelostherlifeforbeingshot.C、Sherecoveredfromshooting.D、Sheprotectedakidfromvi
A、Thevalueofknowinghumanhistory.B、Theimportanceofsharinginformation.C、Howtobringbackthreatenedlanguages.D、Whye
G由randomizedcontrolledtrial和behavior-modificationtools定位到G段。第1句说要使用尽可能多的行为修正工具。Hester在进行随机克制实验时,使用MM网站和其他在线工具,实验的结果表明很有效。本题句子
B根据theoretically和personalizetheireducation定位到B段。原文说,多数利益相关者赞同,让学生有机会进行个性化的学习,从理论上说是更可取的做法。本题句子的helpful与原文的preferable对应,let对应gi
A、Oneoftheacademymembers.B、CreatoroftheOscarstatue.C、AnOscarwinner.D、AnomineefortheOscaraward.B
A、Hislovelypets.B、Hisbeingavegetarian.C、Hisinbornloveforanimals.D、Hissympathyforanimals.C对话开头部分,女士问男士起初是什么让他对保护动
A、Theyaremanagerandassistant.B、Theyarebusinesspartners.C、Theyarecustomerandmanager.D、Theyarecoworkersofthesam
A、InvitethemantowatchTVtogether.B、Gotohealthclubtoloseweight.C、Takeexerciseeverymorning.D、Loseweightjustlik
A、TheymetYokoiShoichiwhenhearrived.B、TheysawadisplayofShoichi’sclothingandequipment.C、Theywenttoadepartment
随机试题
______是影响消费者市场需求的基本因素。
试分析法律关系的构成。
下列哪种激素是神经激素?
两项都是影响健康的生活方式是
在民事代理过程中,代理人负有哪些义务?()
假设在某固定时间段内某基金的平均收益率为40%,标准差为0.5。当前一年定期存款利率为5%,则该基金的夏普比率为()。
以摊余成本进行后续计量的金融资产一般包括持有至到期投资、贷款和应收款项等;以公允价值进行后续计量的金融资产通常包括交易性金融资产和可供出售金融资产。()
某酒厂2013年4月份生产一种新的粮食白酒,广告样品使用0.8吨,已知该种白酒无同类产品出厂价,生产成本每吨40000元,成本利润率为10%。已知粮食白酒消费税的定额税率为0.5元/500克,比例税率为20%。根据消费税法律制度的规定,该酒厂当月应缴纳的消
《劳动法》适用于()。
A我常去图书馆借小说。B他在做什么呢?C玛丽,你要去哪儿?D我想买一套纪念邮票。E妈妈的生日是1月30号,正好是星期六。F当然。我们先坐公共汽车,然后换地铁。例如:你知道怎么去那儿吗?(F)我出来的时候,他正在写作业呢。(
最新回复
(
0
)