Прочитайте текст и заполните пропуски подходящими по смыслу словами Heat causes some 1_______ to exp...: ответ на тест 284265 - Английский язык

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Heat causes some 1_______ to expand more than others. For example, copper expands more than 2_______. This effect is used in the bimetal strip, which consists of two dissimilar strips of metal 3_______ together. The strips are usually made of brass (an alloy of copper and zinc) and invar, a ferrous alloy which expands very little when heated.
An increase in 4_______ causes the brass to expand more than the invar. This expansion causes the bimetal strip to bend, and consequently a switch or a valve is activated.

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Heat causes some 1_______ to expand more than others. For example, copper expands more than 2_______. This effect is used in the bimetal strip, which consists of two dissimilar strips of metal 3_______ together. The strips are usually made of brass (an alloy of copper and zinc) and invar, a ferrous alloy which expands very little when heated.
An increase in 4_______ causes the brass to expand more than the invar. This expansion causes the bimetal strip to bend, and consequently a switch or a valve is activated.

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Heat causes liquids to expand. This effect is used in the 1_______. An increase in air temperature 2_______ the liquid to expand in the heat sensor. This expansion causes the valve to close and consequently the 3_______ of hot water is reduced.
After a time, the temperature will go down and the 4_______ will cool and contract. The spring load will now be greater than the liquid pressure and the valve will open. Once again, the hot water flow is increased.

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Man has always tried to improve his standard of living by changing his surroundings and by making 1_______ to simplify the everyday tasks necessary for his existence. At first, the only 2_______ he could use were those he could see around him – stone, wood and so on. He survived in competition with other animals because of his abilities with his 3_______ and their coordination with his brain. Because he did not have the strength and speed of some animals, his survival depended on his 4_______ use to get food and to keep him warm and safe.

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A variety of housing has been provided in new towns, including two-storey houses, bungalows, flats and maisonettes. The greatest demand is for 1_______ with gardens. Many families moving to the new towns have previously lived in overcrowded 2_______ in flats or rooms in the centres of cities and want the space and freedom of a house and a garden where children can play in safety. In view of this preference, care is taken to provide houses of varied 3_______ types, avoiding monotony and ensuring privacy. Houses may, for example, be built in courts, closes, terraces or other groupings and set various distances from, and angles to, roads. A number of 4_______ such as bricks and cements of different colours and panels of natural timber are also used.

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The first scientists to study colour was Sir Isaac Newton. He was an English 1_______      who lived from 1642 to 1727. Newton was the first person to 2 _______ white light into different colours.
In 1861 another English scientist, James Clerk Maxwell, showed that he could make other colours by mixing the primary colours – red, blue and yellow – in different ways. These other colours are called secondary and tertiary colours. We make secondary colours by 3 _______ two primary colours together. For example, red and yellow become orange, yellow and blue become green, and blue and red become violet. We make tertiary colour with one 4_______ colour.
We can make a room look bigger or smaller, hotter or colder by using colour. Green and blue are cold colours. They can also make a room look bigger. Red, orange and yellow are hot colours. They can make a room look smaller.