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Прочитайте текст и заполните пропуски подходящими по смыслу словами Sonar Sound Navigation and Rangi...: ответ на тест 606853 - Английский язык

Прочитайте текст и заполните пропуски подходящими по смыслу словами
Sonar (Sound Navigation and Ranging) is employed to locate submerged enemy 1________________. Like radar it is an echo-ranging 2__________________. It operates in the following way - a ship 3________________ a sound wave into the water. Encounting an obstacle the wave is reflected back to the ship, which – since the speed of sound through water is known - determines its distance from the object from the time it took the echo to return. To create the original sound wave, the ship generates 4________________ signals in а transmitter; it then sends these to a transducer, positioned on its keel as deeply in the water as possible. The transducer converts the signals into sound and transmits them through the water.
Варианты ответов
  • sends
  • electrical
  • device
  • submarines
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Вопрос задал(а): Анонимный пользователь, 12 Ноябрь 2020 в 20:12
На вопрос ответил(а): Анастасия Степанова, 12 Ноябрь 2020 в 20:12

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The 1________________ is basically a three-section device composed of two outside sections and a middle section. The two outside 2______________ are doped so that they are either P- or N-tуре, and the middle section is doped opposite to the outside sections. Transistors are 3_________________ as NPN or PNP according to the doping of the sections or elements. When the two outside sections are N-type semiconductors and the middle section is a P-type, the transistor is an NPN-type. When the two 4_________________ sections are P-types and the middle is N-type, the transistor is a PNP-type.

Вопрос № 606855

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Experts believe that some boys are spending so much time playing computer games and watching violent films that they are living in a fantasy world. When girls talk about using home computers, they often discuss different types of software that they use for learning. Boys simply talk about computer games. When 14-year-old girls were asked what they would like to do in the future, they mentioned realistic jobs such as vet, teacher or doctor. The boys' answers were either very vague such as, "I just want to be happy and have lots of money" or unrealistic and they said things such as, "I want to be a fighter pilot”.
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What is the topic of girls’ discussion about using home computers?

Вопрос № 606856

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A lot of knowledge is a dangerous thing for addicts of the Internet. Information is becoming the drug of the new century.
The research, conducted among 1000 managers in Britain, America, Europe and the Far East shows that, as information sources such as the Internet and cable news channels proliferate, we are witnessing the rise of a generation of dataholics.
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Вопрос № 606857

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The quest for information can lead to stress. Almost two-thirds said their leisure time had been curtailed as a result of having to work late to cope with vast amounts of information; 70 percent reported loss of job satisfaction and tension with colleagues because of information overload.
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Why do you have to spend much leisure time to find the information you need?
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