Прочитайте текст и определите какой из заголовков соответствует тексту. A varying current from “outp...: ответ на тест 164587 - Английский язык

Прочитайте текст и определите, какой из заголовков соответствует тексту.
A varying current from “output” transformer passing through the voice coil, varying forces are acting which cause it to vibrate back and forth. As the cone is driven back and forth, its large area sets air into vibration.
It is a well-known fact that large sized loud speakers are especially good at reproducing and dispersing low-pitched sounds. Due to diffraction and interference, however, high-pitched sounds are emitted in a narrow beam and in a forward direction only. Loud speakers with small cones are especially good on the high-pitched notes but are poor at reproducing the low ones.

Прочитайте текст и определите, какой из заголовков соответствует тексту.
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.

A prearranged practical learning professional experience under the guidance of a university coordinator is …

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The article ______ I translated yesterday was very difficult.

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Dinner time is generally between six and eight p.m. The evening meal is the biggest and the main meal of the day. Very often the whole family eats 1_______. They begin with 2_______, followed by fish, roast chicken, potatoes and vegetables, fruit and coffee.
On Sundays many families have 3_______ lunch consisting of roast chicken, lamb or beef with salads, vegetables and gravy.
The British enjoy tasting delicious food from other countries, for example, French, Italian and Chinese food. Modern people are so busy that they do not have a lot of time for cooking 4_______. So, the British buy the food at the restaurant and bring it home already prepared to eat.

Словом, которое не относится к теме «Shapes», является …