Заполните пропуск Important parameters in specifying electron microscopes include accelerating volta...: ответ на тест 305019 - Английский язык

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Important parameters in specifying electron microscopes include accelerating voltage, total magnification and_____.

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Now we shall discuss amplifier circuits, or more specifically, audio amplifiers. 1 _________ is an electron tube or transistor circuit, which 2_________________ up an ac signal applied to its input. It is called a voltage amplifier if the magnitude of the output 3  __________ . From the amplifier is considerably greater than that of the input voltage. As a matter of fact the ratio of the output voltage to the 4__________________ voltage is called the amplification or gain of the amplifier.

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 _______ sensors are used to detect liquid or powder levels, or interfaces between liquids.

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The resistive temperature device can actually be regarded as a high precision wire wound _______.

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 _______ sensing devices are used to measure levels of solid, dry materials.

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 _____is a measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects.