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
60
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、Because the old one could not transfer signals clearly.
B、Because the old one could only send two messages along the same line simultaneously.
C、Because the old one could not send messages quickly enough.
D、Because the old one could not send more than one message at the same time.
答案
D
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3449809.html
相关试题推荐
SomeAmericansarealittlenervousaboutthenation’sfuture,butothersfe
SomeAmericansarealittlenervousaboutthenation’sfuture,butothersfe
InonlytwodecadesAsianAmericanshavebecomethefastest-growingU.S.min
InonlytwodecadesAsianAmericanshavebecomethefastest-growingU.S.min
InonlytwodecadesAsianAmericanshavebecomethefastest-growingU.S.min
Americansareproudoftheirvarietyandindividuality,yettheyloveandre
Americansareproudoftheirvarietyandindividuality,yettheyloveandre
[originaltext]OneofraymaingoalsinthissurveycourseofAmericanpaint
[originaltext]OneofraymaingoalsinthissurveycourseofAmericanpaint
[originaltext]OneofraymaingoalsinthissurveycourseofAmericanpaint
随机试题
ThissectionmeasuresyourabilitytounderstandacademicpassagesinEnglish.T
TheAsian(1)hastakenitstollonHongKong’stouristindustry,(2)offor
Hesaidtherewasnothingtobe______.A、ashamedB、ashamedinC、ashamedofD、asha
校对题:按照原稿改正校样中的错误;若认为原稿有差错,用黑色墨水笔以校对质疑的方式
当分部工程较大或较复杂时,可按()划分为若干个子分部工程。A.材料种类、施工特
下列指标可以用来分析企业盈利能力的是()。A.资产收益率 B.资产周转率
患者因红斑狼疮出现眼睑、下肢浮肿,胸胁胀满,面色无华,腰膝酸软,面热肢冷,口干,
东风刮来的云朵里,细腻如酥的雨丝儿飘落下来,当云朵被____得支离破碎时,丝丝状
A.强制-被动型 B.指导-参与型 C.主动-被动型 D.共同参与型 E
用于吞噬细胞吞噬功能测定的实验是A.硝基蓝四氮唑实验 B.免疫PCR C.H
最新回复
(
0
)