Прочитайте текст. Numerals are signs or symbols for graphic representation of numbers. The earliest ...: ответ на тест 911500 - Английский язык

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Numerals are signs or symbols for graphic representation of numbers. The earliest forms of numerical notation were simply groups of straight lines, either vertical or horizontal, each line corresponding to the number 1. Such a system was inconvenient when dealing with large numbers.
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Numerals are …

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Numerals are signs or symbols for graphic representation of numbers. The earliest forms of numerical notation were simply groups of straight lines, either vertical or horizontal, each line corresponding to the number 1. Such a system was inconvenient when dealing with large numbers.

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Ductility is the ability of a material to deform without breaking. One of the great advantages of metals is their ability to be formed into the shape that is needed, such as car body parts. Materials that are not ductile are brittle. Ductile materials can absorb energy by deformation but brittle materials cannot.
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Ductility is the ability of a material to …

Заполните пропуски в инструкции следующими словами:
1) Mark the 1_______ before you drill it.
2) Switch off the machines before you leave the 2_______.
3) 3_______! There’s some water under the wire.
4) Don’t 4_______ here!

Заполните пропуски в инструкции следующими словами:
1) 1_______! There’s some oil on the floor.
2) Tighten those 2_______. They’re loose.
3) You should cut holes in metal using a 3_______.
4) Always 4_______ machines with a brush – never with your hand.

Заполните пропуски в инструкции следующими словами:
1) 1_______ the concrete well before you use it.
2) Don’t open the tin until you’ve 2_______ it.
3) You should not plaster the wall until you’ve installed the 3_______.
4) Ladders made of 4_______ must never be used near electrical wires.