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Вопрос № 223246 - Английский язык

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Electricity plays a very important part both in industry and in agriculture. We use electricity as a means of transportation and communication. A primitive man depended upon fire, smoke or other kind of signals to send his thoughts to his neighbour. And a modern man can talk with someone in some distance. In recent years electricity has made a great contribution to radio communication between the spaceships and also between the austronauts and the Earth. In addition to that we apply electricity in automation and in research. Much of today's scientific research depends on the solution of different difficult mathematical problems, some of which would require days to solve by the used methods. Electrically-operated computers now give the answers to these problems in seconds.
Варианты ответов
  • There are no problems in scientific research.
  • Electricity is not necessary in agriculture.
  • A primitive man couldn’t live without electricity.
  • With the help of electricity it is possible to communicate between the spaceships and the Earth.
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Вопрос задал(а): Анонимный пользователь, 10 Ноябрь 2020 в 00:16
На вопрос ответил(а): Анастасия Степанова, 10 Ноябрь 2020 в 00:16

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Вопрос № 223245

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Electricity is the power that has made possible the engineering progress of today. In fact, electricity has always been with a man, but only within the last few centuries he has learned to apply it.
One hundred years ago there were neither electric lamps, nor electric motors, nor telephone, nor radio. Now electricity is everywhere. We use electricity in our homes and in buildings where we work or study. Electric lamps light our rooms. The uses of electricity in our homes do not end with producing light. How many electric motors are working in our homes! Electric motors operate washing machines, refrigerators, vacuum cleaners, fans, clocks, and other electrical appliances.
There exist refrigerators without electric motors.
Computers operate washing machines.
Hundred years ago people lit their homes with electric lamps.
It is impossible nowadays to live without electricity.

Вопрос № 284560

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Electricity is the power that has made possible the engineering progress of today. In fact, electricity has always been with a man, but only within the last few centuries he has learned to apply it.
One hundred years ago there were neither electric lamps, nor electric motors, nor telephone, nor radio. Now electricity is everywhere. We use electricity in our homes and in buildings where we work or study. Electric lamps light our rooms. The uses of electricity in our homes do not end with producing light. How many electric motors are working in our homes! Electric motors operate washing machines, refrigerators, vacuum cleaners, fans, clocks, and other electrical appliances.
Hundred years ago people lit their homes with electric lamps.
There exist refrigerators without electric motors.
Computers operate washing machines.
it is impossible nowadays to live without electricity.

Другие вопросы по предмету Английский язык

Вопрос № 223247

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Radio was invented in Russia. The world’s first receiver was constructed in 1895 by the great Russian scientist Alexander Popov. There were no transmitters then, therefore his receiver could only pick up signals produced by lightning discharges during a thunderstorm. A. Popov demonstrated a device called a “storm indicator” at a meeting of the Russian Physico-Chemical Society in St. Petersburg on May 7, 1895. This day is marked now as Radio Day.
The meeting was held at British mathematical Society in St. Petersburg.
The world’s first receiver was constructed in 1895 by Morse.
The device demonstrated by Popov was called a telephone.
At the end of the 19th century transmitters didn’t exist.

Вопрос № 223248

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Alexander Popov found a way of transmitting Morse code signals. In 1897 he sent the world’s first wireless telegram over a distance of 600 m and four years later the range of transmission was increased to 150 km. Ever since, thanks to the work of many scientists of the world, the methods of transmission and reception have been constantly improved. Nowadays radio communication has no limits.
There are some limits in radio communication.
Popov also received Morse code signals.
Only Russian scientists improved the methods of transmission and reception.
The range of the first telegraph transmission was 600 m.

Вопрос № 223249

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Teletypewriters are widely used for high speed telegraph communications as well as for transmission of written messages. For economical transmission over long distances it is essential that only a single wire or transmission channel be required to carry the signal. Furthermore, the reliable and efficient operation can be secured by using not more than two conditions on the line, such as current and no current, or positive impulses and negative impulses.
Efficient operation can be secured by using more than three conditions on the line.
For business transmission over long distances two transmission channels are used.
Teletypewriters are not used for long speed telegraph communications.
You can transmit written messages with the help of teletypewriters.

Вопрос № 223250

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Electricity complete changed communications. Once it was discovered that аn electric current would flow along a wire, it seemed possible that it could be used for messages. As long as two places were connected by a wire electric currents could be sent along it. They could be sent with the speed of light. The question was how could electric current make words?
Electric currents flow along the circuit.
Electric currents changed information.
Electric current can be sent when two places aren’t connected by a wire.
The electric currents could be sent with the speed of light.
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