Вопрос № 911485 - Английский язык

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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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Nails are generally made of plain steel. It is of interest to note that steel used for nails is uncoated steel. Practically, nails are sharpened metal pins driven into wood with a hammer or a mechanical nail gun. There exist different types of nails. Among them common nails and finish nails are the two types most frequently used for fastening. Common nails have flat heads and are used for most structural connections in light framing constructions. The main property of finish nails is that they are headless. Finish nails are used to fasten finish wood work.

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Where did Fred carry the ladder?
Fred had an accident yesterday – he cut his head badly. He’s in hospital now. What happened was this. He took the metal ladder from the store room and carried it into the machine shop. Then he put it onto some boxes next to the main door of the workshop (which was closed, but not locked), and climbed the ladder. While he was repairing the electric cable, someone opened the door and walked into the workshop. The door hit the ladder, and the ladder fell over. Fred fell from the ladder onto the floor. He landed on his feet, but there was some oil on the floor and he slipped, and cut his head on a drilling table.

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A solid body has a definite form, and tends to keep it; a liquid body must be kept in a vessel and adapts itself to the shape of that vessel, but so as to keep its upper surface horizontal, it tends, moreover, to flow from a higher to lower level. A gas, or a gaseous body, cannot be kept in an open vessel, but must be kept in a vessel closed in all sides; it always fills the vessel completely.

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Safety Engineering
This field of engineering has its subject the prevention of accidents. Safety engineers develop methods and procedures to safeguard workers of hazardous occupations. They also assist in designing machinery, factories, ships, and roads, suggesting alternations and improvements to reduce accidents.

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The Arabic system of numerical notation is used in most parts of the world today. This system was first developed in India in the 3rd century BC. At that time the numerals 1, 4, and 6 were written in the same form as today.
The important innovation in the Arabic system was the use of positional notation, in which individual number symbols assume different values according to their position in the written numeral. Positional notation is made possible by the use of a symbol for zero. The symbol 0 makes it possible to differentiate between 11, 101, and 1,001 without the use of additional symbols, and all numbers can be expressed in terms of ten symbols, the numerals from 1 to 9 plus 0. Positional notation also greatly simplifies all forms of written numerical calculation.