首页
登录
职称英语
When early explorers sailed round the world, they use the stars to show【M1
When early explorers sailed round the world, they use the stars to show【M1
游客
2023-10-16
10
管理
问题
When early explorers sailed round the world, they use the stars to show【M1】________
them their position.Now drivers can use satellite navigation systems,【M2】________
satnavs for short, to tell them their route in exact the same way.The【M3】________
only difference is that satnavs use artificial stars-satellites.
There are more then 20 satellites in the Global Positioning System【M4】________
(GPS) .The GPS satellites are about 20, 000 kilometers on the Earth.【M5】________
They have atomic clocks which tell the time to an accurate of one second【M6】________
in 300,000 years.
The satnav compares the positions three or four satellites and works【M7】________
out exactly where it is.It does this several times by a second and is usually【M8】________
accurate to 20 meters anywhere in the world.But the satnav user need to【M9】________
give it accurate informations.Drivers sometimes get lost and end up in the【M10】________
wrong street, the wrong town, or even the wrong country. [br] 【M1】
选项
答案
use→used
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3103873.html
相关试题推荐
Whenearlyexplorerssailedroundtheworld,theyusethestarstoshow【M1
Whenearlyexplorerssailedroundtheworld,theyusethestarstoshow【M1
Whenearlyexplorerssailedroundtheworld,theyusethestarstoshow【M1
Whenearlyexplorerssailedroundtheworld,theyusethestarstoshow【M1
Whenearlyexplorerssailedroundtheworld,theyusethestarstoshow【M1
Whenearlyexplorerssailedroundtheworld,theyusethestarstoshow【M1
Whenearlyexplorerssailedroundtheworld,theyusethestarstoshow【M1
Inthelate15thcentury,ChristopherColumbus,anItaliannavigator,sailedacr
Inthelate15thcentury,ChristopherColumbus,anItaliannavigator,sailedacr
______,explorerscouldneverhavefoundthecave.A、Butforthefissurehadbeen
随机试题
Endingamarriagecanbeasad【C1】______experience,especiallyforchildren.
Theinnervoiceofpeoplewhoappearunconsciouscannowbeheard.Forthef
广告费应归于( )。A.直接费 B.其他直接费 C.间接费 D.工程建设
胸膜腔穿刺抽液临床上常用的部位是()A.2~3肋间(沿锁骨中线) B.6~
患者,男性,57岁,门静脉高压症多年,今日入院,患者家属问及患者的主要病理改变,
A.7 B.14 C.22 D.29
中央银行独立性的实质是如何处理中央银行和()的关系。A.政府 B.存款货币银
甲去外地做生意,向乙借款5万元,为表示信用,甲将其一处三居室的住房交给乙居住,双
注册在海南自由贸易港的企业均适用15%的企业所得税优惠税率。()
根据《注册建造师施工管理签章文件目录》(试行),水库工程质量管理文件中,不属于注
最新回复
(
0
)