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Прочитайте текст и заполните пропуски подходящими по смыслу словами The principles of radar in a sim...: ответ на тест 223122 - Английский язык

Прочитайте текст и заполните пропуски подходящими по смыслу словами
The principles of radar in a simplified form might be stated as 1________________:
1. electromagnetic radiation at high radio frequencies is 2________________ to detect and locate remote reflecting objects;
2. the radiation is sent out in pulses of a few microseconds’ duration, separated by intervals many times the duration of each pulse;
3. the pulses are returned from the reflecting objects and the returns are detected and displayed by receiving equipment placed at the point of transmission;
4. the distance to the 3________________ is determined by measurement of the time it took the pulses to reach the targets from the transmission equipment and return to it;
5. the directions of the targets are determined by use of highly directive radio 4__________________.
Варианты ответов
  • antennas
  • objects
  • used
  • follows
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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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