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
2024-01-05
45
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(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://tihaiku.com/zcyy/3335126.html
相关试题推荐
WhyisJackinterestedininvestigatingseedgermination?[br][originaltext]EM
Choosethecorrectletter,A,B,orC.[br][originaltext]Nowlistencarefully
Choosethecorrectletter,A,B,orC.[br]【L36】[originaltext]Nowlistencaref
Choosethecorrectletter,A,B,orC.[br]【L34】[originaltext]Nowlistencaref
Choosethecorrectletter,A,B,orC.[br][originaltext]Nowlistencarefully
Choosethecorrectletter,A,B,orC.[br][originaltext]Nowlistencarefully
Choosethecorrectletter,A,B,orC.[br][originaltext]Nowlistencarefully
Choosethecorrectletter,A,B,orC.[br][originaltext]Nowlistencarefully
Choosethecorrectletter,A,B,orC.[br][originaltext]Nowlistencarefully
ChoosethecorrectletterA,BorC.[br]【L30】[originaltext]Nowlistencareful
随机试题
【B1】[br]【B14】A、tissuesB、vesselsC、poresD、organsA词义辨析题。空格前的and说明空格处的词和skin并列
PASSAGEFOUR[br]Whydoeconomiststhinktheprofitopportunitiesarerare?Beca
板式橡胶支座抗剪弹性模量试验方法和步骤。11)对试验机要求()。(2018助理
患儿男,7岁。突发右大腿下方剧痛伴寒战,高热,烦躁不安3天。查体:体温39.8℃
男性,31岁,2年前因胃溃疡穿孔行毕I式胃大部切除术。术后半年胃溃疡复发出血行残
官督商办
下列因素中不属于课堂要素的是?() A.教师 B.学生 C.学习过程 D
卡马西平可用于A.小儿感染所致的呼吸衰竭 B.小儿高热所致的惊厥 C.癫痫、
逐日计算法是根据每张保单的第()年有效天数,逐笔计算未到期责任准备金。A.一
某安装公司承接一商务楼(地上30层、地下2层)的电梯安装工程,工程有32层32站
最新回复
(
0
)