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Вопрос № 306472 - Английский язык

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What principle is AM broadcasting based on?
Варианты ответов
  • It’s the detection of amplitude variations in radio waves.
  • This is the radio that most people are familiar with.
  • Radio broadcasting is one of the chief methods of sound broadcasting, in which radio waves are modulated.
  • AM broadcasting means signals travelling by groundway.
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Вопрос задал(а): Анонимный пользователь, 10 Ноябрь 2020 в 01:36
На вопрос ответил(а): Анастасия Степанова, 10 Ноябрь 2020 в 01:36

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What do commercial TV stations broadcast?
They broadcast entertainment programmes, light dramas, talk shows and documentaries.
They broadcast entertainment programmes, talk shows, documentaries and news.
They broadcast entertainment programmes, sport programmes and news.
They broadcast entertainment programmes, light dramas, talk shows, documentaries, sport programmes and news.

Вопрос № 75224

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What may the performance of a machine be based on?
It may be based on manually operated instruments of all kinds.
It may be based on the work of calculating machines and typewriters.
It may be based on such complex mechanical systems as the modern automobile.
It may be based on the transformation of energy or modification of forces and motions.

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Вопрос № 306473

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What typical elements are GPS receivers composed of?
GPS receivers are composed of a generator, an amplifier and a decoder.
A typical GPS receiver is based on SiRF Star III chipset.
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Вопрос № 306474

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What wavelengths are used in modern radar systems?
Very long wavelengths are used in modern radar systems.
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Modern radar systems use shorter wavelengths.

Вопрос № 306475

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What is the advantage of software-defined cellphone?
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Вопрос № 306476

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What characteristic of terahertz screening systems is unacceptable for passengers?
People's concentration can drift.
It is large enough to fill the back seat of a car.
They pick up the characteristic spectral signatures of explosives.
They are seen as if they were nude.
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