Вопрос № 800616 - Английский язык

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The new concrete pipe being manufactured may be classified as the benchmark of industry. Among other excellent qualities, it possesses the highest structural strength compared with any sanitary sewer. What are the main characteristics of the pipe that make it so popular? These are advanced concrete mix design, and steel reinforcement. High quality manufacture processes allow the pipe to be used in any site conditions, from shallow fills to deep bury situations. Strength, concrete’s pipe’s durability and its versatility are the main properties that are combined in the pipe. They produce the technology one can trust.
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What do high quality manufacture processes allow?

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Prestressed concrete is a relatively young product. It started to be widely used only during the last few decades, and is still gaining popularity. The reason of its popularity is its usefulness. The main good qualities of prestressed concrete are its high strength and durability. In prestressed concrete, concrete is combined with steel. This combination is highly advantageous. It serves the purpose of producing a compressed stress in the concrete as a building material. For this reason any member of beam is under constant compression and as a result has no cracks. In modern times this type of concrete serves as construction material for beams, for pipes, and columns, storage tanks, water towers and the like.
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The reason of popularity of prestressed concrete is …

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Nowadays suspended ceilings have become a very popular and economical feature in many types of buildings. The most numerous among these buildings are office and laboratory structures. Many of them install and maintain complex mechanical and electrical installations above the ceiling. These installations include air conditioning ducts, water and waste piping and electrical and communications wiring. They also include such services as fume ducting, vacuum piping, fuel gas lines, compressed air lines, water piping, and chemical waste piping. All these ducts and pipes occupy a considerable space in the building. In some of them they may be equal to the amount of their living space.  
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All these ducts and pipes _______.

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There are different shapes in the picture. They are triangles, squares, rectangles and circles.
Triangles have three angles. Squares and rectangles have four sides. Squares have four equal sides, but rectangles have two equal sides. Circles do not have angles or sides.
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Squares and rectangles have _______.

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There are different objects in the picture. There is a box, a wheel, a frame, a door and a pair of nails. They have different shapes. The box is square. The door is not square, it is rectangular. The nails are circular. The wheel is circular too. The frame is triangular.
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The door is _______.

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There are blocks A, B and C in the picture. Block A is 4cm high, 8 cm wide and 11 cm long. Block B has a height of 4 cm, a width of 10 cm and a length of 18 cm. Block C has the following dimensions: it is 5 cm high, 15 cm wide and 20 cm long. So, the volumes of the blocks are different. Block B is larger than block A, but C is the largest.
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Block B has _______.