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Even the cost of motorcycles and cars differ also. Most of the time, cars are more expensive than motorcycles. Because a car is bigger, it is usually expensive for maintain. Cars have more accessories when compared to a motorcycle besides having four wheels. However, there are several motorcycles which is higher priced than the usual car.
Hydro turbines, the oldest and also the mostly used renewable energy source, hold the highest efficient of power conversion process. The potential head of water is available next to the turbine, so there aren't any energy conversion losses, exactly the mechanical and copper losses inside the turbine and generator and the tail end loss. The efficiency is inside the range of 85 to 90 %.
The rapid development of air filters is closely related to the development of military industry and electronic industry. In the first world war, the use of various chemical agents, asbestos fibre filter paper as the smoke filter layer of military gas masks came into being. The glass fiber filter medium is used in air filtration to obtain a patent in the United States in October 1940. In the 1950s, the United States studied the production process of glass fiber filter paper, and the air filter was improved and developed. In the 1960s, HEPA filters came out; In the 1970s, the filter paper of fine glass fiber was used as the HEPA filter of filter medium, and the filtration efficiency of particle size of 013 micron particle diameter was 99.9998%. Since the eighty s, with the emergence of new test method, use evaluation to improve and to improve the filtering performance requirements, found the HEPA filter there is a serious problem, and he had a higher ULPA filter performance. Countries are still working on it and expect more advanced air filters soon
During 12 months, there are many of auto shows with a view to promoting latest and a lot advanced styles of automobiles around the globe. As to be known that an auto show is a public exhibition of brand-new automobile models, debuts, concept cars, and in many cases out-of-production classical editions. Auto shows are potential opportunities appealing the deep attention from automobile manufacturers and automobile enthusiasts. By tradition, almost all of the auto shows are held once or twice per year in numerous big auto events like Detroit, Los Angeles, New York, Frankfurt, Beijing. Besides, one specially important contribution on the success of auto shows would be the attendance of advertising models at car shows. Advertising models, also best-known as promotion girls, show girls, or auto models, whose careers get excited about promoting car trends worldwide. Professionally posing while watching lens, show girls are becoming the eye from automobile enthusiasts at automobile shows around the world. About 700 car models in prestigious automobile brands like Motors, Ford, Toyota, Honda, Mercedes are actually displayed at automobile shows 2010, and the gathering of beautiful automobile show girls is apparently more remarkable. Let\'s take a look at probably the most stunning promotion girls at auto shows during the year 2010 using the following nice shots.
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