Вопрос № 1077771 - Английский язык

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The electrical system in a car can have either a positive or a negative 1_______. In both systems, the battery leads and terminals must be connected 2_______.
In a car with a positive earth, the positive terminal must be connected to the car body. The negative terminal must be connected to the electrical 3_______.
In a car with a negative earth, the positive terminal must be connected to the electrical system. The negative terminal must be connected to the 4_______ body.

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An electric cell is used to produce and supply electric energy. It consists of an electrolyte and two electrodes. Electrodes are used as terminals, they connect the cell to the circuit - current passes through the terminals and the bulb lights.
Cells can be connected in series, in parallel and in series-parallel. In order to increase the current capacity cells should be connected in parallel. In order to increase the voltage output cells should be connected in series. In case a battery has a large current capacity and a large voltage output, its cells are connected in series-parallel.
When cells are connected in series the positive terminal of one cell is connected to the negative terminal of the second cell, the positive terminal of the second cell - to the negative terminal of the third ... and so on.
When cells are connected in parallel their negative terminals are connected together and their positive terminals are also connected.
In case a cell has a trouble it stops operating or operates badly. This cell should be substituted by another one.

Explaining is often accompanied by teaching _____ to help students visualize an object or problem.

Storage is the second ______ stage or process.

In metals ______ occurs at very low temperatures, but higher temperature ______ occurs in some ceramic materials.

My radio produces weird noises only, perhaps the ______ is broken.