October 25, 1884. This was a time before the invention of the radio or the airplane and long before the World Wars or the Great Depression. It is when SigmaJOSEPH ANGLE
解释:题目long before the invention of radar很久很久之前发明的雷达【对应】tens of millions of years earlier数百万年前,sophisticated radar-likes ystem精致的类似雷达系统【对应】perfected the system完美的系统,要填主语,那么,答案natural selection自然选择 11、关键词inaccurate错误的term条款n.,because,not used...
How did people count things a long time ago? Before the invention of___numbers, people used many different___to count things.___, people use their fingers, and___their toes. However, they could only count small numbers___. After that, they...
a每天练习口语 Every day practices the spoken language[translate] amore quickly 迅速[translate] a他似乎没有穿耳洞 He as if has not pierced the ears the hole[translate] aBefore the invention of paper books were made from pieces of wood or bamboo,so they were big and heavy In 105 A.D.,Ca...
Which invention was developed after the radio but before the television? A. The record player B. The cassette tape C. The VCR D. The CD player 相关知识点: 试题来源: 解析 A。在收音机之后、电视之前发明的是留声机。磁带、录像机、CD 播放器都在电视之后发明。
a请输入您需要翻译的文本 Please input the text which you need to translate[translate] aas worrying, though is the passenger who can't hear the instructions to turn off hid radio because the music's too loud. 如担心,虽则是不能听见指示转动暗藏的收音机,因为音乐的太大声的乘客。[translate] ...
Why was the maser invented before the invention of the laser? Free Electron Maser: A free-electron maser is a device in which a stream of electrons is directed into a resonant cavity in which they oscillate. This causes a strong standing wave to be induced in the cavity. The electrons...
It is generally recognized, ___, that the introduction of the computer in the early 20th century, ___ by the invention of the integrated circuit during the 1960s, radically changed the process, ___ its impact on the media was not immediately ___. As time went by, computers became...
Alexander Graham Bell had theidea of passing speech by electrical impulses and invented thefirst telephone in 1876. The invention of the “wireless” byGuglielmo Marconi in 1895 made the way for modern-day radiotransmission. V. K. Zworykin worked on one of the first televi-sions in 1948....
a无线电波想四面八方传播 The radio wave wants to disseminate in all directions[translate] aSo that we inform PTSJ accordingly. So that we inform PTSJ accordingly.[translate] afor the worst-case response time of a given 为指定的最坏的响应时间[translate] ...