饮料
发表于 2025-3-23 11:14:39
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僵硬
发表于 2025-3-23 14:14:36
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预知
发表于 2025-3-23 20:00:06
Oil and Natural Gas,n the shallow waters surrounding pre-historic land masses. Through time, these drifted down to the sea-bed where the fatty acids contained in the organisms were transformed to a proto-petroleum product through bacteriological reduction. Probably through continuous and prolonged geothermal heating, t
让空气进入
发表于 2025-3-24 00:32:32
Coal,th or — if we are luckier — from near the surface. Rich in carbon, this rock is combustible. It is not a single mineral but a range of natural solids varying in composition. The complete range is broadly taken to extend from peat, through brown coal, lignite and bituminous coal to anthracite.
解脱
发表于 2025-3-24 04:56:40
Solar Energy,13001400 W/m.. Not all of this reaches the earth’s surface but even so the energy from the sun received at the earth amounts to some tens of thousands of the world’s energy requirements for a given period. Clearly there is the potential for solar energy to supply some, if not all, of our energy dema
旧石器
发表于 2025-3-24 10:36:25
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敏捷
发表于 2025-3-24 11:15:56
Renewable Land Energy Sources,tly classed as a renewable-energy form. It is, however, the only one that is not directly or indirectly derived from the sun. Geothermal heat is present throughout the earth’s crust in the form of hot dry rocks and is also available in certain regions as hot water or steam from underground reservoir
嫌恶
发表于 2025-3-24 16:35:33
Conservation,ials. Old ships’ timbers were preserved to build houses and barns; rags were used in the paper industry; organic wastes were spread on the land as fertiliser. As industrialisation progressed with cheap and abundant energy and materials, conservationist habits were gradually abandoned in favour of ma
custody
发表于 2025-3-24 19:32:04
Energy Options for the Third World,he world’s poorest nations. It includes countries of Latin America and the more recently independent states of Africa and Asia. The other two ‘Worlds’ are the Western World (Western Europe, the U.S.A., Canada, Japan, Australia, New Zealand and South Africa), and the Communist World which includes th
简洁
发表于 2025-3-25 02:37:16
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