The charts show the sources of the electricity produced in four countries between 2003 and 2008. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words. Task 1 饼状图 - - 范文 答题 Some people believe that governme...
Whenever electrical wiring in a building has too much current flowing through it, these simple machines cut the power until somebody can fix the problem. Without circuit breakers (or fuses), household electricity would be impractical because of the potential for fires and other mayhem resulting ...
The Three Levels of “How” to Decarbonise The Decarbonisation of the Built Environment could be a much more expensive exercise and less effective than it needs to be. To prevent this, we need to consider the three levels of ‘How’ to decarbonise. Level 1 Ask, at the first and ...
aFarmers use 70% - 85%of the world fresh water to produce food. People usually don't pay much attention to how much water industry(工业) uses, but you may be surprised to know that industry uses 59% of the water in developed countries.[translate]...
Just inside the base, where the case widens out, there's a small electronic circuit, containing a transformer, that boosts the voltage of the incoming electricity. (You can see a photo of the circuit below.) This means the lamp can produce more light than it would otherwise do and also ...
The earths energy is mainly underground coal and oil, and if you just use that very quickly, we need to save energy. Most of the electricity we use comes from coal, which generates billowing smoke and debris when it burns. That oil USES more fuel, cars, planes use life a lot of plast...
Although China has rich resources(资源), we are short of something, such as fresh water. It is reported that we will have no coal or oil in 100 years. So if we go on wasting resources, we will use nothing in the future. We should say no to the people who waste things. Everybody...
Nuclear waste remains dangerous for 250,000 years, which greatly increases the security problem attached to its potential for use in nuclear weapons. The nuclear industry argues that, as an electricity generator that does not produce greenhouse gases, nuclear power should have a role in combating ...
In fact, the SOFC has demonstrated the longest operating life of any fuel cell under certain operating conditions. The high temperature also has an advantage: The steam that the fuel cells produce can be channeled into turbines to generate more electricity. This process is called co-generation ...
Russia has a significant wind energy technical potential—more than 60 PWh of electricity per year [1]. The regions of the Russian north, and in particular the Gulf of Ob, the Kola Peninsula and most of the coastal strip of the far east, belong to the windiest zones of the world, ...