Вопрос № 284257 - Английский язык

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While baseball caps have never gone out of 1_______, the days of only wearing your favourite team’s 2_______ are gone. Today the 3_______ of shapes, colours and design is 4_______. So if you want to buy a cap, you may need some help.

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It’s Saturday 1 _______ and you are at the shops with your friends. You’ve been     2 _______ all morning and you’re starving! But where are you going to eat? There’s a good chance that you’ll go to a 3 _______ restaurant like Pizza Hut, Burger King or Wendy’s. The biggest problem is 4 _______ one because there are so many.

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There are different types of 1_______ for metalwork and for woodwork. Woodwork chisels have a smaller angle at the point of the tool. Although this is suitable for 2________ materials such as wood, a tool point with a small 3_______ is too weak for hard materials. To cut 4_______, a stronger point is necessary, so the angle is greater at the point of a metalwork chisel.

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Most cars use water to cool the 1_______. Water flows from the radiator through a 2_______ of water passages and rubber 3_______. A water pump pushes the water round. This system is known a 4_______ system .

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The raw materials for plastics are coal and 1_______, and many plastic materials today are produced from oil. Plastics can be divided into two main 2_______. The first group, called thermoplastics, includes well-known plastics such as PVC, nylon and polythene. These can be treated (heated, softened and cooled) several times, and can be formed into combs, pipes and bags, in addition to many other similar 3_______.
Thermosetting 4_______ include melamine, polyurethane and phenolic resin, and can be made into tableware, foams and plugs respectively. However, this group differs from thermoplastics because they can be treated only once and harden when they are heated.

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Heat causes some 1_______ to expand more than others. For example, copper expands more than iron. This 2_______ is used in the bimetal strip, which consists of two dissimilar strips of metal welded 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 3_______ 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 4_______.