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- fomyzev1 Le 15/11/2017
Клип-кейс Oxy Fashion MetallPlated состоит из металлизированного бампера и прозрачной пластиковой панели. Аксессуар надежно защищает смартфон от ударов и других воздействий, не изменяя при этом его внешний вид. Выступающие с обоих сторон рамки не допускают контакта устройства с твердыми поверхностями, за счет чего его корпус и экран всегда остаются гладкими и приятными на ощупь. Специальные прорези в чехле предоставляют доступ к камере, кнопкам, разъемам и другим функциональным элементам телефона.
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- Iakinfzek Le 15/11/2017
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- Gregoryatoky Le 15/11/2017
Oakley Briller Aalborg
Numerous individuals with ringing in the ears find it important to minimize the anxiety in their life. Anxiety lets out chemical compounds to your system that cause excitement in your nervous system. Decreasing this in your daily life can decrease the signs or symptoms you experience or eradicate it completely. Anxiety alone could even be the reason for your ringing in the ears.
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- Tocanbename Le 15/11/2017
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Система бизнес-аналитики, Система управления транспортом, Система управления складом и многое другое.
Также наша компания может разработать систему управления под любые цели вашего предпрятия.
Все подробности на сайте: http://bit.ly/2zwQI8J -
- Davidgor Le 15/11/2017
London Plumbers, Plumbing in London, 24 Hour Plumber London https://en.wikipedia.org/wiki/Plumbing
expert Plumbers London!..
Plumbing (which comes from the Latin word plumbum, which suggests lead, as pipes were once made from lead) is the job of working with pipes, tubing and plumbing fixtures for drinking water systems and getting cleared of waste. A plumber is a person who fixes or puts in piping systems, plumbing fixtures and equipment for example water heaters. Many plumbers are construction workers. The plumbing industry is an important part of every developed economy because people need clean water and safe ways to move and store waste.[1]
Plumbing refers to a system of pipes and fixtures put in a building to move water and the get rid of waste that is in water. Plumbing is different from water and sewage systems because plumbing system serves one building, while water and sewage systems serve a group of buildings or a city.
Contents [hide]
1 History
2 Materials
3 Regulation
4 References
History[change | change source]
Roman lead pipe at the Roman Baths in Bath, England, with a seam that is folded
Until modern cities grew in the 19th century. plumbing was very rare At about the same time, public health leaders began wanting better systems to get rid of waste. Before this, people got rid of waste by dumping it onto the ground or into rivers and collecting it. However, there were some plumbing pipes in the city settlements of the Indus Valley Civilization by 2700 B.C.[2] Plumbing was also used during the ancient civilizations such as the Greek, Roman, Persian, Indian, and Chinese civilizations as they built public baths and needed drinking water, and somewhere to drain waste. The Romans used pipe inscriptions to stop people from stealing water.
These systems did not improve much over the years. There were no improvements from the time of the Roman aqueducts and sewers until the 19th century. Eventually the development of separate, underground water and sewage systems got rid of open sewage ditches and cesspools. Most large cities today send solid wastes through pipes to sewage treatment plants. Treatment separates water from waste and makes the water more pure before it goes into streams or other bodies of water. Most places stopped for drinking water after World War II because of the dangers of lead poisoning, using lead. At this time, copper piping was started because it was safer than using lead pipes.[3]
Materials[change | change source]
Water systems in ancient times used gravity to move water. They used pipes or channels usually made of clay, lead, bamboo or stone. Today, water-supply systems use a network of high-pressure pumps, and pipes are made of copper,[4] brass, plastic, or other material that is nontoxic. Drain and vent lines are made of plastic, steel, cast-iron, and lead. Lead isn't used in pipes today because it can be poisonous.[5][6][7]
Piping being placed for a sink
Plumber wrench for working on pipes and fittings
The 'straight' sections of plumbing systems are of pipe or tube. A pipe is usually made by casting or welding, where a tube is made through extrusion. Pipe has thicker walls and might be threaded or welded, where tubes have thinner walls, and needs special joining techniques like 'brazing', 'compression fitting', 'crimping', or for plastics, 'solvent welding'.
In addition to the straight pipe or tubing, many fittings are required in plumbing systems, such as valves, elbows, tees, and unions.
Plumbing fixtures are designed. Some examples of fixtures include water closets (also known as toilets), urinals, bidets, showers, bathtubs, utility and kitchen sinks, drinking fountains, ice makers, humidifiers, air washers, fountains, and eye wash stations.
https://en.wikipedia.org/wiki/Piping_and_plumbing_fitting -
- Kirillred Le 15/11/2017
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- SlowHyCrent Le 15/11/2017
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- Robertreofe Le 14/11/2017
Продам прогнозы с сайта m-sp.in . Пишите на почту zonder2456@mail.ru -
- Josephfup Le 14/11/2017
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- EmersonBeapy Le 14/11/2017
как объединить слои в фотошопе - анимация для фотошопа, коллажирование.
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