lolka143
20.06.2020 02:10

P 82 the grove of the dancing birches 6 класс перевод текста

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Ответ:
nika7912
21.02.2022 11:30
Along with the improvement of the telegraph in the XIX century, a telephone appeared. In the early 60s of the XIX century. Flight has designed a telephone set, which has not received any practical application. Further development of the phone is connected with the names of American inventors I. Gray and A.G. Bella.
Later, Bell demonstrated the developed by him electromagnetic telephone, which served as a transmitter and receiver. Apparatus interested in the business community, which helped the inventor to establish "Bell Telephone Company."
Many inventors worked on the improvement of the phone (V.Siemens, Ader, Gover, Shtaker, Dolbir, etc.). Soon Edison designed another type of telephone (1878). Edison provided the transmission of sound over a considerable distance.
In the 20-ies of the XX century, the first automatic telephone exchanges were installed.
In 1973 the company "Motorola" appeared. The first phone worked without recharging no more than 20 minutes and the size was similar to a brick and weighed 794 grams!
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Ответ:
samruk1974
16.09.2022 22:02

ответ:

  1.   we can't go out yet. it is raining   hard.

  2.   she will get up early tomorrow morning.

  3.   it   is a fine day today. there are   some cloud in the sky ,but   the sun is shining.

  4.   where are you going? -i am   going   to the library. i usually   get ready for the seminars there.

  5.   susan has lost much   weight on her diet. she looks rather slim now.

  6.   if the day  is   warm next sunday, we will go to the country.

  7.   could you find out what time the train was leaving?

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