首页
登录
职称英语
[originaltext] Not long ago, some of you may have read about the team of mou
[originaltext] Not long ago, some of you may have read about the team of mou
游客
2023-08-03
33
管理
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://tihaiku.com/zcyy/2894559.html
相关试题推荐
[originaltext]Ateamofscientistsrecentlybeganaprojecttomeasurethe
[originaltext]ThankyouforcallingtheUniversityCareerManagementCentre
[originaltext]M:Goodmorning.Todaywe’lltalkaboutgoal-settingandweh
[originaltext]M:Goodmorning.Todaywe’lltalkaboutgoal-settingandweh
[originaltext]M:Oh.Hi.there.(1)Abeauty,isn’tshe?Doyouwanttotake
[originaltext]M:Oh.Hi.there.(1)Abeauty,isn’tshe?Doyouwanttotake
[originaltext]Whenpeopleencountersomeonewithastrongpersonality,they
[originaltext]Noscenarioisricherwiththepotentialimpolitenessthanth
[originaltext]Noscenarioisricherwiththepotentialimpolitenessthanth
[originaltext]Thereisacommonopinionthatifyoustudyhardandgraduate
随机试题
YouarewithustodayandIassureyouthatallmembersoftheclassjoinmein
“实践是不断向前发展的,如果我们的认识不能根据实践的发展而逐步深化,以致改变原来
风险事件:为增强交易对手信用风险资本监管的有效性,推动商业银行提升衍生工具风险管
下列施工成本管理的措施中,属于技术措施的是()。A.确定最合适的施工机械方
190、常规站保护,双母线接线变压器保护启动失灵和解除电压闭锁应采用()
已知流通中的现金、居民及企事业单位的活期存款、居民、企事业及财政的各种储蓄和定期
《献血法》规定,国家实行( )。A.有偿献血制度 B.无偿献血制度 C.现
纳税人跨地区提供下列业务中,预缴增值税时按照预缴地城建税税率计算缴纳城建税和附加
债权人领取提存物的权利,自提存之日起()年内不行使而消灭,提存物扣除提存费
单模光纤的特点有( )。 A.芯粗,只能传播一种模式的光 B.模间色散小
最新回复
(
0
)