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Вопрос № 857121 - Английский язык

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Can you imagine what the world would be like if there were no electricity? In fact, most of what we take for granted would not exist. There would be no computers, TV, cinemas or stereos for our entertainment, and we would not be able to cook and eat in the same way without cookers and fridges. If Thomas Edison had not invented the electric light bulb, we would now still be using candles to see at night. The problem with this energy source is that it uses fossil fuels – we burn coal and oil to generate electricity. Our everyday lives use a huge amount of power, and industry even more. The damage to the environment will increase if we continue to burn coal for energy, which can cause serious air pollution and increase the size of the hole in the ozone layer. Because of this danger, people are now using other sources of fuel, such as solar, wind, and water power.
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Our everyday lives use a huge amount of …
Варианты ответов
  • candles
  • computers
  • cookers and fridges
  • power
Тип вопроса: Вопрос с одним правильными вариантом
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Вопрос задал(а): Анонимный пользователь, 13 Ноябрь 2020 в 15:21
На вопрос ответил(а): Анастасия Степанова, 13 Ноябрь 2020 в 15:21

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Вопрос № 256502

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There exist many sources of energy in the world both potential and kinetic. One source consists in water falling from a high level such as an upland lake. Another source is wind or moving air. Others consist in tides in the sea, heat from subterranean sources and coal deposits and oil wells yielding mineral oil.
But all these sources and stores of energy are not equally useful to mankind. Moreover some stores of energy such as coal and oil can never be replaced by us when once used up. On the other hand stores of high level water are continually being replaced by rain and wind and tides will not, as far as we know, ever cease to exist. A very important matter is the conversion of energy from one form to another. The form most required by us is mechanical rotational energy.
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Stores of high level water are continually being replaced by rain and wind and tides will not ever ________________.
continue to exist
continue to grow
cease to explain
cease to exist

Вопрос № 223909

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In the last century, people began to use the great power of the wind and the sun to produce electricity. Giant fans can be attached to electrical generators. An electrical generator is a machine that creates electricity when it turns. When the wind blows, the fan turns the generator. This is a good way to create electricity. Unlike burning coal or oil, wind energy does not create pollution. And the wind will always blow.
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When the wind blows, _______.
wind energy does not create pollution.
people began to use the great power of the wind.
fans can be attached to electrical generators.
the fan turns the generator.

Другие вопросы по предмету Английский язык

Вопрос № 857122

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Lead is now a very expensive metal. At one time it was used extensively for roofing and for water piping because of its softness and resistance to corrosion. But later copper and iron have taken its place. Lead is a gray malleable metal which melts at 327 ̊C, which is low for a metal. Lead is still used for roofing and for making waste pipes and sink traps because it is easily bent into shape; storage battery (accumulator) plates; storage tanks for sulphuric acid; lead shot; solder; screens to stop harmful radiation from radioactive substances. Lead monoxide is used for making glass that is brilliant and sparkling, i.e. decorative tableware.
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Lead melts at 327 °C, which is …
common for all metals
used for making glass
high for a metal
low for a metal

Вопрос № 857124

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The television receiver includes tube circuits for receiving, amplifying, and synchronizing the signals, and a large cathod tube called a kinescope. This part of the device converts the video impulses from the transmitting station into luminous spots on a fluorescent screen. In the kinescope the amplified video signals are applied to the grid, and through it control the intensity of the electron beam.
Tube Circuits
The Kinescope
The Receiver
The Television Receiver

Вопрос № 857125

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In the colour receiver the incoming signal goes through frequency and amplitude selective circuits. In these circuits the brightness components, the colour components, and the horizontal and vertical beam-synchronizing components are separated. The brightness component is applied simultaneously to each of the three electron guns. The red, green, and blue colour signal voltage components are produced and are applied to the three respective kinescope electron guns. They combine with the brightness components voltage to produce beam intensities which reproduce the original picture.
The Brightness Components
Selective Circuits
The Colour Components
Colour Receiver

Вопрос № 857126

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Telephony is the branch of telecommunication which provides for the exchange of information in the form of speech. In any telephone system speech or other sounds are converted into electric signals that are transmitted to a distant point where they are converted back into reproductions of the original sound.
Telephone set is an assembly of apparatus provided at each end of a telephone circuits to enable the user to make and receive calls.
A microphone forming part of a telephone set is called a telephone transmitter while a transducer forming part of a telephone set and used to convert voice-frequency currents into audible sounds is telephone receiver. The system also includes an electric bell responsive to low-frequency AC or pulsating current and is used as a calling device at a telephone station.
An Electric Bell
A Telephone Transmitter
Telephone Set
Telephone System
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