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
34
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
RagtimeandItsPerformersSevenperformersfromtheWas
[originaltext]M:Youlooksoexcited,whathappenedtoyou.W:IwillgotoEur
Departmentstoresarelargeretailstoressellingmanydifferentkindsofme
DictationListentothepassage.Forquestions21—25,fillintheblankswithth
WhenLilycamehomeat5p.m.yesterday,
备用信用证()。A.主要分为可撤销的备用信用证和不可撤销的备用信用证 B
变压器、压变、充油电缆等注油设备属于一级动火区。
该柱子的砌体抗压强度设计值最接近于()N/mm2。A..5.44
物流成本管理的主要方法有( )。A.比较分析法 B.定量分析法 C.综合评价
施工企业销售自行加工的商品混凝土的收入属于()收入。A.产品销售 B.施
最新回复
(
0
)