首页
登录
职称英语
[originaltext] Thomas Edison is a well known American inventor. He was taugh
[originaltext] Thomas Edison is a well known American inventor. He was taugh
游客
2024-02-14
56
管理
问题
Thomas Edison is a well known American inventor. He was taught by his mother when he was a child. Later he learned things by himself by reading and experimenting. He built a lab for himself to work in, and he worked very hard in his sixty years of scientific activities. He made over a thousand inventions. Few inventors in the world have had such great success.
Edison’s first invention was made in 1868. He was then a telegraph operator. He wished to work out a new method to improve the old telegraph system because it was impossible at that time for the system to send more than one message along the same line at the same time. He read all the works of Faraday, another great scientist, before starting his invention. Sometimes he didn’t go to bed and didn’t even stop to eat. He thought he had very much to do and there was no time to lose. Days and nights he was reading and reading. After he read through Faraday’s writings, he began his experiments. A few months later he succeeded in building a double transmitter and improved the old telegraph System.
选项
A、In 1848.
B、In 1858.
C、In 1868.
D、In 1878.
答案
C
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3449808.html
相关试题推荐
[originaltext]Thereseemsnevertohavebeenacivilizationwithouttoys,b
[originaltext]Manyloverspromisetobetogetherforever,inlifeandinde
[originaltext]Manyloverspromisetobetogetherforever,inlifeandinde
[originaltext]Manyloverspromisetobetogetherforever,inlifeandinde
[originaltext]M:Doyouthinkyoungpeoplearegiventoomuchfreedomnowadays,
[originaltext]M:Doyouthinkyoungpeoplearegiventoomuchfreedomnowadays,
[originaltext]W:Dad!M:Yes?What’sthematter,Mary?W:I’mwonderingifIsh
[originaltext]M:Thisisit.Iknowthatitissmallerthanyouwanted,butit
[originaltext]W:Mr.Watson,Iwonderwhetherit’spossibleformetotakeava
[originaltext]W:Mr.Watson,Iwonderwhetherit’spossibleformetotakeava
随机试题
【B1】[br]【B4】A、sizeB、numberC、amountD、quantityBsize大小,尺寸;number数字,数量;amount总
1 ApanelofthegreatandthegoodfromEuropeandtheUnitedStatesrecently
Thebesttitleforthepassagewouldbe______.[br]ThepromotedJapanesemanag
下列哪项指标与音质的空间感关系最为密切?( )A.声压级 B.侧向能量因子
以下关于模块化的叙述中,正确的是()A.每个模块的规模越小越好,这样开发每个模块
颌面部放疗引起放射性颌骨坏死的照射剂量最小为()A.40Gy B.
( )是以法律共同体的长期实践为前提,以法律共同体的普遍的法律确信为基础。A.
2019上半年,我国规模以上互联网和相关服务企业(简称互联网企业)完成业务收入
看涨期权空头的损益平衡点为()。(不计交易费用)A.标的物的价格+执行价格
根据会计法律制度的规定,原始凭证的金额有错误时,应当采取的正确做法是()。A
最新回复
(
0
)