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Вопрос № 190536 - Английский язык

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What makes concrete an economical substitute for traditional materials?
Варианты ответов
  • It has low tensile strength.
  • It can be poured into forms producing a great variety of structural elements.
  • It is a manufactured mixture of cement and water with aggregates.
  • It requires a slow and costly process of forms making.
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Вопрос задал(а): Анонимный пользователь, 10 Ноябрь 2020 в 00:07
На вопрос ответил(а): Анастасия Степанова, 10 Ноябрь 2020 в 00:07

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Вопрос № 848134

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Concrete is the name of artificial stone. The materials from which concrete is formed are sand, pieces of broken stone and cement mixed with water in suitable proportions. These materials are called ingredients of concrete. The sand and broken stone form the skeleton of concrete. Dry cement is an inert powder, but on the addition of water a chemical reaction takes place.
This causes the whole mix to set and harden forming a solid mix.
Water used in concrete mix is ordinary drinking water. It must be free from any impurities. The amount of water added influences the properties of concrete. Concrete products must be manufactured according with existing standards. Having chosen component materials builders must be well familiar with technology of concrete and use them in correct proportions.
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Which materials form the skeleton of concrete?
Pieces of broken stone and cement mixed with water form the skeleton of concrete.
The sand and water form the skeleton of concrete.
Cement and water form the skeleton of concrete.
The sand and broken stone form the skeleton of concrete.

Вопрос № 223848

Прочитайте текст
Concrete is the name of artificial stone. The materials from which concrete is formed are sand, pieces of broken stone and cement mixed with water in suitable proportions. These materials are called ingredients of concrete. The sand and broken stone form the skeleton of concrete. Dry cement is an inert powder, but on the addition of water a chemical reaction takes place.
This causes the whole mix to set and harden forming a solid mix.
Water used in concrete mix is ordinary drinking water. It must be free from any impurities. The amount of water added influences the properties of concrete. Concrete products must be manufactured according with existing standards. Having chosen component materials builders must be well familiar with technology of concrete and use them in correct proportions.
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Which materials form the skeleton of concrete?
Water and broken stone form the skeleton of concrete.
The sand and water form the skeleton of concrete.
Cement and water form the skeleton of concrete.
The sand and broken stone form the skeleton of concrete.

Другие вопросы по предмету Английский язык

Вопрос № 190537

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What is the role of mathematical models in design development?
They include topographic investigations.
They certify the design team recruitment.
They identify the final cost of a building.
They increase the building firmness.

Вопрос № 190538

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What does fire-detection system include?
It employs fire truck pumps.
It is supported by mechanical ventilating systems.
It includes hand-operated fire extinguishers.
It consists of electronic heat and smoke detectors.

Вопрос № 190539

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Who used noble gases?
General Electric used them for producing the first commercial fluorescent lamps.
Michael Faraday created carbon-arc lamps using noble gases.
Thomas Edison and Joseph Swan made experiments using noble gases.
Claude and Moore developed light tubes with neon and argon.

Вопрос № 190540

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What does the term “buttressing” mean?
It’s a model of rectangular construction.
It’s a type of traditional building materials.
It’s a standard of measurement.
It’s  a method used to strengthen the wall resistance.
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