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Вопрос № 628417 - Английский язык

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What did the introduction of grooves in the concrete field help to improve?
Варианты ответов
  • This arrangement permitted expansion of the facilities.
  • The grooves served to draw off excess water in rainy conditions.
  • The grooves helped to extend runways.
  • The grooves had the slope-line approach system.
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Вопрос задал(а): Анонимный пользователь, 12 Ноябрь 2020 в 20:34
На вопрос ответил(а): Анастасия Степанова, 12 Ноябрь 2020 в 20:34

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Вопрос № 237346

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What did the introduction of grooves in the concrete field help to improve?
The grooves ran perpendicular to the direction of the landing aircraft.
The grooves helped to extend runways.
This arrangement permitted expansion of the facilities.
The grooves served to draw off excess water in rainy conditions.

Вопрос № 284340

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The quality of concrete is known to depend on the properties of materials it consists of. The amount of constructing materials is also of great importance. Among the kinds of concrete used in modern construction there are plain concrete and reinforced, or ferro-concrete. The usage of plain concrete is practically limitless. As to ferro-concrete, it is mostly used for construction of foundations, columns, girders and beams. This kind of concrete is also rather popular for constructing bridges, dams and dock walls.
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The usage of what construction material is practically limitless?
The usage of reinforced concrete is practically limitless.
The usage of gravel concrete is practically limitless.
The usage of asphalt concrete is practically limitless.
The usage of plain concrete is practically limitless.

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