Вопрос № 800595 - Английский язык

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In modern times bricks can be made of concrete, mortar, of burnt clay and of a combination of some other substances. For example, different types of clay and shale can be used as raw materials. Accordingly, bricks produced nowadays have different sizes, shapes, colours, and textures. Bricks also vary with the method of fabrication and temperatures of burning. It should be noted that some types of brick, such as, for example, salmon bricks are underburnt and highly porous. Naturally, their strength is extremely poor. This property of salmon brick should be taken into account when choosing brick material for construction. But there exist many other types of brick that are extremely strong and almost glass hard. Between these extremes there lie some other types of brick with different properties. Brick properties are of great importance and should be taken into account while choosing material for construction purposes.
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Different types of clay and shale …

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Brick, stone, and timber are known to be the oldest building materials. 1 _______. Their production started in prehistoric times. 2 _______. Thousands of years ago the builders in Egypt already knew the advantages of bricks and used them for construction. 3 _______. Bricks were produced not by burning but by drying in the sun, as it was much sunshine in Egypt all the year round. 4 _______.

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It is a well-known fact that there exist many types of bricks. Some of them are highly usable in construction while others are not popular because of their poor properties. 1 _______. To them belong, for example, ceramic tiles.
2 _______. It is mainly used for decorative and sanitary purposes.
A ceramic tile consists of a clay body covered with decorative glaze. Ceramic tiles are usually flat in form. They are extremely various. 3 _______. Their shapes are widely variable: squares, hexagons, and others. Ceramic tiles are produced from clays of different colours. But their colours do not depend on the colours of clays they are made of. 4 _______.

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In fibre reinforced polymer bridge deck is a newly-invented arrangement. 1 _______. They are extremely useful since, because of their composition, they have a wide range of application. Compared with other conventional materials they can solve a much greater number of problems.
2 _______. The material it is made up of is very easy to transport. 3 _______. Holes are easily cut in the deck. 4 _______.

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Nails are generally made of plain steel. 1 _______. Practically, nails are sharpened metal pins driven into wood with a hammer or a mechanical nail gun. 2 _______. Among them common nails and finish nails are the two types most frequently used for fastening. 3 _______. The main property of finish nails is that they are headless. 4 _______.

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Finish nails are often the same length as common nails. 1 _______. Besides common and finish nails, there exists a great variety of other shapes. Face nail is a nail driven through a side of one wood member into the side of another one.
2 _______. It turns like a screw when it is driven with a hammer.
3 _______. Why are nails so popular in the process of construction? 4 _______. Another property that makes them so popular is that they are very simple to insert with a hammer or a mechanical nail gun.