They are used, for example, to capture waste heat from car engines. They work because certain materials generate an electrical potential difference within themselves if one part is hotter than another. That can be used to drive a current through an external circuit. The reason thermoelectric ...
aFree energy is everywhere around us. There are many ways to generate and collect energy from various sources like sun, wind, water etc. but somehow people always tend to make things more difficult by not using these renewable sources of energy. In last few years there is a great amount of...
解析 B 【详解】句意:幸运的是,我们找到了利用太阳能、风能和水的新方法。第一空,根据空后动词use可知,此空应填动词不定式的标志词to,故排除A;第二空,根据空前energy和空后the sun, wind and water.可知,来自的意思,此空故填from,故排除C和D,故选B。反馈 收藏 ...
aoriginalpremium originalpremium[translate] aThe system cannot find the file specified 系统不可能发现文件指定[translate] athere is a variety of ways in which the sun may be used to provide energy. 有太阳也许用于提供能量的各种各样的方式。[translate]...
Technologies People used the energy from the sunligh in different ways. The air was fresh. However, life today has b 61 many new problems. One of the biggest is the pollution Now, it's our duty to protect the environment around us. We should s 62 off the lights when we are not usin...
It is also said that the sun can be used to disinfect water in tropical countries. Another way to take advantage of the sun's energy is to use solar cookers.DAUNCEYGUYCorporate Knights Magazine
There are many problems in our modern world. One very serious problem is energy. We get a great()of energy we need from coal, gas, and oil. However, the()of energy which we use is()every year, and we only have enough coal, gas, and oil for ..
Researchers are looking into new ways to generate efficient photovoltaic energy (光伏能源) and for this they have been inspired by the v-shaped posture of the Cabbage White butterfly(菜粉蝶).Photovoltaic energy is the science behind solar power, where light is turned into electricity. It is a ...
Free energy is everywhere around us, There are many ways to make and collect energy from 【1】 sources(来源)like the sun, wind, water, etc. But people always make things difficult by not using these sources of energy. In the last few years there have been a great number of new ideas...
aThat's for sure.People use trees and other plants in many ways.The trees and plants take energy from the sun and turn it into food.Medicine and clothing are also made from trees and plants. 那肯定是。居于用途树和其他植物用许多方式。树和植物采取能量从太阳并且把它变成食物。医学和衣物由树...