The resistance of a material to breaking when there is a crack is called: ответ на тест 25822 - Английский язык

The ability of a material to deform without breaking is called …

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The amount of electricity which is flowing (it is called the current) is measured in units called amps. The pressure of electricity, the voltage, is measured in volts. A unit of resistance is called an ohm.
Current, voltage and resistance have definite relationship to one another. The current and the voltage determine the power, the rate at which electrical energy is used. A unit of power is a watt.
Закончите предложение an ohm.
A unit of resistance is called _______.

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Competition and Market Conditions
1. Competition is the economic rivalry that occurs among businesses when producers in a given industry attempt to gain a larger share of the market. Economists use the term «market structure» to describe how competitive specific industries are. Perfect competition and pure monopoly are the opposite extremes of the market structure continuum.
2. Perfect competition has many sellers of the same product, while pure monopoly has only one. Perfect competition exists when there are many buyers and sellers, none of whom control prices. In contrast, pure monopoly exists when a single firm controls the total production or sale of a good or service.
3. The most competitive type of industry is that with perfect competition. Four conditions must be present in the market structure for perfect competition to exist.
First: a particular good or service must have many sellers and buyers available. In addition, each seller must account for just a small share of the overall sales in the market. The goal of these sellers is to attract enough buyers to their businesses to earn a profit.
Second: the good or service offered by one competing firm must be similar or identical to those offered by other firms. In such a situation, buyers may choose freely from the selection.
Third: buyers must have easy access to information on the products and prices available. This information allows buyers to make intelligent choices about which goods to purchase based on price and quality.
Fourth: entrance to and exit from the industry must be relatively easy and inexpensive. In a purely competitive market structure, firms can easily enter a profitable industry or leave an unprofitable one.
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