首页
登录
职称英语
[audioFiles]2014m8s/audio_ezfj_368_20144[/audioFiles]The Compass指南针 A magne
[audioFiles]2014m8s/audio_ezfj_368_20144[/audioFiles]The Compass指南针 A magne
游客
2023-11-07
12
管理
问题
选项
答案
The Compass指南针
A magnetic compass is a device that has been used for centuries now, / and its utility in helping people find their way is undoubted. / Before technology gave us the privilege of GPS navigation systems, / the act of finding out where you are and which side is north / was carried out simply with the help of a compass. / We’ve all seen a compass at some point or the other, / and this has almost always led us to the question “How does a compass work?” / The answer to this question can be explained / through the concept of the earth’s electromagnetism. / Simply speaking, a compass is basically a small magnet / that has a needle attached on one end. / The other end of the magnet is attached to a freely moving pin. / When the compass is held out steadily, / the magnet becomes parallel with the magnetic field of the Earth, / and this causes it to point north. /
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3166757.html
相关试题推荐
[audioFiles]audio_ezfz2008_001[/audioFiles]Choos
[audioFiles]2014m8x/audio_ezfm_012_20146[/audioFiles]
[audioFiles]audio_ezf_m_0217(20102)[/audioFiles]
[audioFiles]audio_ezf_m_0205(20102)[/audioFiles]
[audioFiles]audio_ezf_m_0402(20102)[/audioFiles]
[audioFiles]audio_ezf_m_0275(20102)[/audioFiles]Howdidthefirstpeopleo
[audioFiles]audio_ezf_m_0145(20102)[/audioFiles]
[audioFiles]2014m8x/audio_ezfm_035_20146[/audioFiles]De
Whatkindofhaircutdidthemanwant?[audioFiles]audio_ezfm_0065(20104)[/audio
[audioFiles]2014m8x/audio_ezfm_001_20146[/audioFiles]
随机试题
[originaltext]M:Isupposeyou’veheardthenewsaboutTom.W:Ijustcan’tget
Nowhereelseintheworld()moreattractivescenerythaninSwitzerland.A、youca
[originaltext]W:Hello,Sam.ThisisPaulaHandson.Sorrytobotheryou.ButI’
在计算机网络安全中,不属于物理安全威胁的是( )。A.格式化硬盘 B.线路拆
关于中国文学,下列说法正确的有()A.《过秦论》的作者是贾谊 B.《春秋》
以下选项中,不属于测绘项目质量控制中“二级检查”制度的是()A:参与测绘生产的作
人应对自己的正常行为负责,这种负责甚至包括因行为触犯法律而受制裁。但是,人不应该
班杜拉将人们事先对自己是否能成功从事某种任务的估计称为()。
某药物的生物半衰期是6.93h,表观分布容积是100L,该药物有较强的首过效应,
中国人民银行法规定的我国的货币政策目标为()。A.稳定物价,并以此促进经济
最新回复
(
0
)