Прочитайте текст The amount of electricity which is flowing it is called the current is measured in ...: ответ на тест 800624 - Английский язык

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Electricity is a flow of negative charges called electrons. Electrons are particles that form a part of all atoms. These electric charges are measured in units called coulombs. Electricity is a very versatile form of energy that can be converted into many other forms of energy, including light and heat, direct current, which flows in one direction, and alternating current, which changes direction 60 times per second.
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What is electricity?

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Electricity is a flow of negative charges called electrons. Electrons are particles that form a part of all atoms. These electric charges are measured in units called coulombs. Electricity is a very versatile form of energy that can be converted into many other forms of energy, including light and heat, direct current, which flows in one direction, and alternating current, which changes direction 60 times per second.
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What is electricity?

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In System International (SI) there are seven base units. They are the following:
- the metre (m) as the unit of length;
- the kilogram (kg) as the unit of mass;
- the second (s) as the unit of time;
- the ampere (A) as the unit of electric current;
- the kelvin (K) as the unit of (thermodynamic) temperature difference;
- the mole (mol) as the unit of substance;
- the candela (cd) as the unit of luminous intensity.
All other SI units are derived from the seven base units. They are the joule, the watt, the pascal, the newton and, most interestingly, the unit of charge, the coulomb.
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All other SI units _______.

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1________ since long hair can be caught in moving machinery.
2________ as loose clothing can be caught in moving machinery.
3________ when lightweight shoes are worn.
Sleeves should always be rolled up 4_______.

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Always wear 1_______.
2_______ under a suspended load.
Always wear gloves 3_______.
4_______ when operating a grinding wheel.

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1________ when operating a grinding wheel.
2________ when working with electrical cables.
3________ when working with overhead loads.
Guards must be positioned correctly 4________.