A volume of space that is essentially empty of matter is called: ответ на тест 95952 - Английский язык

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The cloud of electrons formed in the space between cathode and the plate is called space charge. The space charge is negative and hence has a repelling effect on electrons emitted from the cathode. The amount of the plate current depends on the space charge and the relative strength of the electric field set up by the positive plate voltage.

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The cloud of electrons formed in the space between cathode and the plate is called space charge. The space charge is negative and hence has a repelling effect on electrons emitted from the cathode. The amount of the plate current depends on the space charge and the relative strength of the electric field set up by the positive plate voltage.

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Nick: Hullo, Boris!
Boris: Hullo, Nick. 1_______?
Nick: 2_______, thank you. I entered the automobile construction college.
Boris: That’s nice, what will you become after graduating from the college?
Nick: I’ll become a technician and deal with manufacturing new cars.
Boris: Why did you choose this profession?
Nick: I enjoy learning about a car. I enjoy working with metal. And most of all I enjoy being able to construct cars.
Boris: Do you enjoy this course?
Nick: 3_______.
Boris: Tell me about your profession in detail, please?
Nick: With great pleasure. As you know an automobile must be safe, have smooth acting clutch, silent gears, excellent brakes and steering system. And in order to achieve these qualities a lot of work must be done.
Boris: 4_______. I believe you like your profession very much.
Nick: Oh, yes, very much, indeed.

Colloids exist in nature in the cells of plants and animals, in the sap of certain plants, among which is the rubber tree, and in the class of foods are called proteins. Colloids have recently come to be of tremendous importance in certain manufacturing processes, including the making of glass, rubber and artificial silk, tanning leather and dyeing.
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George Stephenson was a British inventor and engineer. He is famous for building the first practical railway locomotive. Stephenson was born in 1781 in England. During his youth he worked as a fireman and later as an engineer in the coal mines of Newcastle. He invented one of the first miner’s safety lamps independently of the British inventor Humphrey Davy. Stephenson’s early locomotives were used to carry loads in coal mines, and in 1823 he established a factory at Newcastle for their manufacture. In 1829 he designed a locomotive known as the Rocket, which could carry both loads and passengers at a greater speed than any locomotive at that time. The success of the Rocket was the beginning of the construction of locomotives and laying the railway lines.
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