首页
登录
职称英语
[audioFiles]2016m4x/audio_ezfj_368_20164[/audioFiles]The Compass指南针 A magne
[audioFiles]2016m4x/audio_ezfj_368_20164[/audioFiles]The Compass指南针 A magne
游客
2024-09-20
37
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:http://tihaiku.com/zcyy/3765887.html
相关试题推荐
Children’sAggressiveBehaviorandSoftDrinks[audioFiles]2016m3x/audio_ezfj_25
[audioFiles]2016m4x/audio_ezfj_294_20164[/audioFiles]
[audioFiles]2016m4x/audio_ezfj_370_20164[/audioFiles]WaterSports水上运动Theh
[audioFiles]2016m4x/audio_ezfj_369_20164[/audioFiles]BallGames球类运动Ballga
[audioFiles]2016m4x/audio_ezfj_366_20164[/audioFiles]Picnic野餐Assummertime
[audioFiles]2016m4x/audio_ezfj_153_20164[/audioFiles]
[audioFiles]2016m4x/audio_ezfj_019_20164[/audioFiles]
[audioFiles]2016m4x/audio_ezfj_018_20164[/audioFiles]
[audioFiles]2016m4x/audio_ezfj_025_20164[/audioFiles]Na
[audioFiles]2016m4x/audio_ezfj_023_20164[/audioFiles]
随机试题
TheUSCongressA)TheUScongressisthelegislativebranchofthefede
某热水供应系统采用容积式水加热器供应热水。其设计参数如下:冷水温度10℃,热水温
女性,38岁。反复右上腹疼痛病史5年,9小时前参加宴会后突发中上腹部持续性疼痛,
公司经营管理能力分析的主要内容包括()。 ①公司法人治理结构分析 ②公司区
(2017年真题)基金份额持有人享有权利包括()。 Ⅰ.分享基金财产收益
磺胺甲噁唑可缩写为A.APC B.6-APA C.SD D.SMZ E.
患者42岁。右下腹肿块多年,为囊性,表面光滑,活动性大,B超提示卵巢肿瘤。昨日憋
在良好的教育环境下5-6岁幼儿能集中注意()。 A.5分钟
根据《证券法》的规定,下列选项中,不属于公司内幕信息的知情人的是( )。A.发行
编制建设工程项设计概算时,在收集原始资料后应进行的工作有:①确定有关数据;②
最新回复
(
0
)