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An electric power consumer is an enterprise utilizing electric power. Its
operating characteristics vary during the hours of day, days and nights, days of
week and seasons.
All electric power consumers are divided into groups with common load
characteristics. To the first group belong municipal consumers with a predominant
lighting load: dwelling houses, hospitals, theatres, street lighting systems, mines,
etc.
To the second group belong industrial consumers with a predominant power
load (electric motors): industrial plants, mines, etc.
To the third group belongs transport, for example, electrified railways. The
fourth consists of agricultural consumers, for example, electrotractors.
The operating load conditions of each group are determined by the load
graph. The load graph shows the consumption of power during different periods of
day, month, and year. On the load graph the time of the maximum loads and
minimum loads is given.
Large industrial areas with cities are supplied from electric networks fed by
electric power plants. These plants are interconnected for operation in parallel and
located in different parts of the given area. They may include some large thermal
and hydroelectric power plants.
The sum total of the electric power plants, the networks that interconnect
them and the power utilizing devices of the consumers, is called a power system.
All the components of a power system are interrelated by the common processes of
protection, distribution, and consumption of both electric and heat power.
In a power system, all the parallelly operating plants carry the total load of all the
consumers supplied by the given system.
The building up of a power system is of great importance for the national
economy. An economical utilization of the power plant installations and of the
sources of power is achieved by interconnected operation of a series of power
plants in a common power distribution system.

Doctors say obesity, also known as severe overweight, is a complex condition. A

4)doctor may advise medical interventions in addition to changes in behavior. But experts say the most

successful weight-loss plans include a well-balanced 5)diet and exercise. People who want to avoid 6)weight gain have to balance the number of calories they eat with the number

of calories they use. To lose weight, you can reduce the number of 7)calories you take in, or increase the number you use, or both. Experts at the National Institutes of Health say to lose

weight, a person should do an hour of moderate to intensive physical activity most days of the week. This could include fast walking, 8)short or strength training. You should also follow

a nutritious eating plan and take in 9)fewer calories than your body uses each day. A recent study looked at four of the most popular dieting plans in the United States. Researchers at

Stanford University in California studied more than three hundred overweight women, mostly in their thirties and forties. Each woman went on one of the four plans: Atkins, The Zone, Ornish or

LEARN. The women attended diet classes and received written information about the 10)foodplans. At the end of a year, the women on the Atkins diet had lost the most, more than four

and one-half kilograms on average. They also did better on tests including cholesterol levels and blood pressure.

Объяснение:

ответ: А)Более трех миллионов человек используют метро или метрополитен чтобы ездить по всему лондону. Метрополитен имеет более 275 станций в многих разных частях города и 12 линий которые могут отвезти тебя в любое место в которое ты хочешь попасть. По этому не забудь взять карту метро с собой перед тем как начать путешествие.

Б) красный двухэтажный автобус

Ты можешь увидеть такие автобусы в лондоне. Они длинные но не быстрые. Туристы любят ездить на таких автобусах изза вида со второго этажа.

С) черная кабина

Черные кабины это спец такси которые имеют много комнат для пассажиров и их багажа. Чернокабинщики проходят тест на знание лондона так как они должны знать все 25000 улиц в районе 10 км от центра города

Объяснение: