Вопрос № 912011 - Английский язык

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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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Many connections in wood structures depend on direct bearing of one member of the structure on another for their strength. Various simple fasteners are used for constructing purposes. Of them wood fasteners include nails, screws, bolts, anchors and some others. Nails are generally made of plain steel. It is interesting to note that steel used for nails is uncoated steel. There exist different types of nails. Among them common nails and finish nails are the two types most frequently used for fastening.
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What are nails generally made of?

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Nowadays suspended ceilings have become a very popular and economical feature in many types of buildings. 1_______. 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. 2_______. 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.
3_______. Lighting fixtures, loudspeakers, and fire detection devices may also be installed into a ceiling. 4_______.

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Being the oldest building material, wood is also known to be the only naturally growing organic material. 1_______? Hardly so, because wood always contains some water which decreases its strength. 2_______. It is a well-known fact that the drier is the cut wood the greater is its strength and hardness.
Trees are known to grow naturally, which makes wood a constantly renewable natural resource. 3_______. But, as any other construction material, wood has its disadvantages. The main ones are the following – it is not fire-resistant, it easily burns. 4_______.

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This is a workshop. 1_______. Many tools are on the toolboard. 2_______. A safety-notice is above the toolboard. 3_______. There are many nuts, nails, screws on the shelf. 4_______. A hammer is not on the shelf, it is on the bench. A switch is between the bench and the shelf.

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The traditional frame material for windows is wood. 1_______. Wood is known to be a good thermal insulator and is extremely workable. It is easily turned into sashes.2_______. That is why wood elements require repainting every few years. 3_______. Besides, it requires no periodic repainting. 4_______. Aluminum also has its disadvantages. It is known to conduct heat so well that very soon condensation will form and even frost on interior window frame surface during cold winter weather.