Прочитайте текст и заполните пропуски подходящими по смыслу словами. Dynamo is a common 1_______ for...: ответ на тест 857102 - Английский язык

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Dynamo is a common 1_______ for converting mechanical energy into electric energy. This process 2_______ on the fact that if an electrical conductor moves across a magnetic field, an electric current flows in the conductor.
Usually a 3_______ includes an electromagnet, called the field magnet, between the poles of which a suitable conductor, usually in the form a coil, called the armature, is rotated. The mechanical energy of the rotation, in the form of a current in the armature, is thus converted into 4_______ energy.

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Dynamo is a common device for converting mechanical energy into electric energy. This process depends on the fact that if an electrical conductor moves across a magnetic field, an electric current flows in the conductor.
Usually a dynamo includes an electromagnet, called the field magnet, between the poles of which a suitable conductor, usually in the form of a coil, called the armature, is rotated. The mechanical energy of the rotation, in the form of a current in the armature, is thus converted into electric energy.

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Maldacena is an Argentine 1_______. In the US, many scientists 2_______ him. He’s more famous there than in Argentina. He used other 3_______ to make a new theory that is more complete than Newton’s and Einstein’s. Thanks to Maldacena, the structure of matter is easier to 4_______ now than a few years ago.

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A solid body has a definite form, and tends to keep it; a liquid body must be kept in a vessel and adapts itself to the shape of that vessel, but so as to keep its upper surface horizontal, it tends, moreover, to flow from a higher to lower level. A gas, or a gaseous body, cannot be kept in an open vessel, but must be kept in a vessel closed in all sides; it always fills the vessel completely.
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What form does a solid body have?

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Marie and Pierre Curie knew that radium existed, but they had to prove it because a chemist believes in the existence of a new substance after seeing it, touching it, weighing it and finding out its atomic weight. They began working at that problem in 1898. Their task was to obtain pure radium. The way to separating radium was a difficult one. They could separate radium by treating large amounts of pitchblende.
In 1902 they succeeded in preparing a decigram of pure radium. Radium had something better than a beautiful colour, it was luminous. The discovery of radium gave them the possibility of discovering other radioactive substances.
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What colour was radium?

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Tin is a silvery metal which is not corroded by air. The chief use is for making tin plate, i.e. sheetiron coated with tin. Tin plate is suitable for cans in which acid fruit and other food-stuffs are packed because tin is not attacked by weak acids. For good containers, iron is coated with tin instead of zinc because tin is not subject to attack by acids in food.
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Why is tin plate suitable for cans?