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Вопрос № 911475 - Английский язык

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Fatigue is the growth of cracks under stress. It occurs when a mechanical part is subjected to a repeated or cyclic stress such as vibration. Even when the maximum stress never exceeds the elastic limit, failure of the material can occur even after a short time. No deformation is seen during fatigue, but small localized cracks develop and propagate through the material until the remaining cross-sectional area cannot support the maximum stress of the cyclic force. Knowledge of tensile stress, elastic limits, and the resistance of materials to creep and fatigue are of basic importance in engineering.
Варианты ответов
  • Engineering
  • Vibration
  • Fatigue
  • Resistance of Materials
Тип вопроса: Вопрос с одним правильными вариантом
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Вопрос задал(а): Анонимный пользователь, 13 Ноябрь 2020 в 16:10
На вопрос ответил(а): Анастасия Степанова, 13 Ноябрь 2020 в 16:10

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Вопрос № 933218

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What is fatigue?
Fatigue is the growth of cracks under stress. It occurs when a mechanical part is subjected to a repeated or cyclic stress such as vibration. Even when the maximum stress never exceeds the elastic limit, failure of the material can occur even after a short time. No deformation is seen during fatigue, but small localized cracks develop and propagate through the material until the remaining cross-sectional area cannot support the maximum stress of the cyclic force. Knowledge of tensile stress, elastic limits, and the resistance of materials to creep and fatigue are of basic importance in engineering.
It is the maximum stress of the cyclic force.
It is the resistance of materials to creep.
It is a repeated or cyclic stress.
It is the growth of cracks under stress.

Вопрос № 1006971

Fatigue is the growth of cracks under stress. It occurs when a mechanical part is subjected to a repeated or cyclic stress such as vibration. Even when the maximum stress never exceeds the elastic limit, failure of the material can occur even after a short time. No deformation is seen during fatigue, but small localized cracks develop and propagate through the material until the remaining cross-sectional area cannot support the maximum stress of the cyclic force. Knowledge of tensile stress, elastic limits, and the resistance of materials to creep and fatigue are of basic importance in engineering.
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What is fatigue?
It is the maximum stress of the cyclic force.
It is the resistance of materials to creep.
It is a repeated or cyclic stress.
It is the growth of cracks under stress.

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Вопрос № 911476

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The combinations of two or more different materials are called composite materials. They usually have unique mechanical and physical properties because they combine the best properties of different materials. For example, a fibre-glass reinforced plastic combines the high strength of thin glass fibres with the ductility and chemical resistance of plastic. Nowadays composites are being used for structures such as bridges, boat-building etc.
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Вопрос № 911477

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When you turn the handle of a water tap clockwise, the water stops. When you 1_______ it anticlockwise, the water pours out of the tap again. How does it work?
Look at FIG.2. The tap has a handle on the top and inside there is a 2_______, and a washer. The washer is over a hole.
When you turn the handle clockwise, this makes the bolt move downwards. The washer then covers the hole and stops the water.
When you turn the handle 3_______, the bolt moves upwards and the washer uncovers the hole again. This lets 4_______ flow through the tap again.
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Вопрос № 911479

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As the population increases, the 1_______ of water supply in many desert regions becomes more urgent with every year.
Scientists 2_______ that the best way to solve this problem is to construct plants that will use atomic energy to distill fresh 3_______ from the sea. It is believed that it will be cheaper to distill sea water than to make 4_______ freshwater reservoirs.
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Вопрос № 911481

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Some measuring 1_______ are fitted with dials. To prevent 2_______ readings, always read the dial correctly. Read the deal from 3_______ in front so that the reflection is behind the needle. If the 4_______ is not viewed from the front the reading will be incorrect.
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