Заполните пропуски в инструкции следующими словами 1. No 1 _______ is permitted anywhere on site. 2....: ответ на тест 782274 - Английский язык

Заполните пропуски в инструкции следующими словами
1. No 1 _______ is permitted anywhere on site.
2. Safety harnesses must be worn at heights.
3. Crane operators must 2 _______ have an assistant.
4. Cable must be attached to crane 3 _______.
5. 4 _______ operator must check that the ground is level.

Заполните пропуски в инструкции следующими словами
1. No 1 _______ is permitted anywhere on site.
2. Safety harnesses must be worn at heights.
3. Crane operators must 2 _______ have an assistant.
4. Cable must be attached to crane 3 _______.
5. 4 _______ operator must check that the ground is level.

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Heat is the energy possessed by a substance in the form of kinetic energy of molecular movement, rotation, and vibration. Usually measured in calories. Transmitted by conduction, convention and radiation. The chief observable, physical effects of a change in the heat content of a body may include rise in temperature; change of state from solid to liquid, solid to gas, and liquid to gas; expansion; and electrical effects.

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The combination of metals and non-metals is known as an alloy. For example, steel is an alloy of iron and carbon. The alloy of copper and zinc is known as brass. The properties of alloys are often better than the properties of their constituents. That is why the majority of engineering products are made of various alloys.

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There is a lot of carbon (about 85%) in diesel fuel. There is also a lot of carbon in petrol. There is a little sulphur (about 1%) in diesel fuel and there is no sulphur in petrol. There is a great deal of petrol (about 95%) and a little oil (about 5%) in the fuel mixture for two-stroke engines. There is no oil in the fuel for four-stroke engines. There is a great deal of air (90%) and not much fuel (10%) in the fuel and air mixture.

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Copper is a red metal. It is harder and stronger than aluminium and more flexible than steel. Electric wires are generally made of copper because this metal has a high electric conductivity. However, copper is heavier than aluminium and steel.