Вопрос № 607523 - Английский язык

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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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Heat causes liquids to expand. This effect is used in the thermostat in Fig. 21.2. An increase in air temperature causes the liquid to expand in the heat sensor. This expansion causes the valve to close and consequently the flow of hot water is reduced.
After a time, the temperature will go down and consequently the liquid will cool and contract. The spring load will now be greater than the liquid pressure and consequently the valve will open. Once again, the hot water flow is increased.
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Heat causes liquids to …

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Exploration for oil around the Scottish shores has become a very big 1_______. This is an account of how oil is extracted from beneath the North Sea.
To get the oil out, four production problems will be used: huge structures, three made of concrete and one of 2_______, designed to work for 25 years or more. Instead of floating, they are planted firmly on the sea bed and designed to stand up to the worst of sea and weather. From each platform a series of holes is 3_______, some going almost straight down, others drilled at an 4_______ away from the platform so that a large volume of oil can be extracted. The oil does not lie there like a great swimming pool full of black liquid, it is trapped in small spaces between the porous rocks. To get as much as possible out many separate holes have to be drilled.

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They recently built a new swimming pool in the small town of Winter Park, Florida. It is one 1_______ deep at one end and 55 metres deep at the other. That was not the original 2_______: half the pool has been eaten by an enormous hole.
The hole has also eaten two businesses, 3_______, five cars, several trees, and a large piece of road. It was still growing yesterday.
Mrs Mae Rose Owens was the first person to see it, last Friday. As she looked out of her window  she saw a tree getting shorter and 4_______.
‘Suddenly the earth just opened up and down this tree went. I couldn’t believe it.’
The hole seems to be a result of the drought. Underground streams have dried out, making the subsoil contract.

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If silica is melted and allowed to cool slowly, the result is 1_______. Glass is more difficult to make than pottery, and the first all-glass containers did not appear until 1500 BC. Glass was made then by melting raw silica held by a glass thread on a sand core to form a bottle or shaping it in a mould. It was not until 2_______ that the technique of blowing glass was developed. A wine glass was made by blowing melted glass in a mould, adding a stem, shaping the foot and trimming. Press moulding is an even more 3_______ technique.
Glass-working tools include a blowpipe, rod, tongs, shears and rolling plate. Glass was originally melted in a furnaces were 4_______.

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The Morgan is a unique car.1___________. Each Morgan is made individually. 2_______. There are no assembly lines because each stage of the manufacturing is done by highly-skilled craftsmen. For example, the wooden frame is made in the same way as the first organ in 1909, upholsterers make the leather seats, and sheet metalworkers make the panels by hand.
It takes a long time to take a car by hand.  3___________. Buyers put their name on a waiting list and then wait for the factory to tell them that their car is finished. 4___________ .Like proud parents-to-be, people on the waiting list can visit the factory to see their car being made and to talk to the craftsmen doing the work.