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AdvantagesDisadvantages石油的优缺点Ample supply for42–93 yearsLow cost (withhuge subsidies)High netenergy yieldEasily transportedwithin andbetween countriesLow land useEfficient distributionsystemNeed to findsubstitute within50 yearsArtificially lowprice encourageswaste anddiscouragessearch foralternativesAir pollutionwhen burnedReleases CO 2when burnedWater pollution
Fossil fuels ( 化石燃料 )• Gas: natural gas, world’s 3rdlargest commercial fuel; produceless CO 2 compared to coal and oil• Main component: methane ( 甲烷 )
Page 1 and 2: Environmental Science环境学
Page 3 and 4: Major contents of the courseChapter
Page 5 and 6: Important conceptsEnergy ( 能量
Page 7 and 8: Types of Energy• Primary Energy (
Page 9 and 10: Secondary EnergyNon-Renewable — e
Page 11 and 12: History of energy consumption1 卡
Page 13 and 14: Energy Demand IncreasesAs World Pop
Page 15 and 16: Energy consumption and living quali
Page 23 and 24: Worldwide Commercial Energy Product
Page 25 and 26: Increasing heat and carbon contentI
Page 27 and 28: Surface Mine: 露天采煤
Page 29 and 30: 煤的优缺点AdvantagesAmple supp
Page 31 and 32: Fossil fuels ( 化石燃料 )•
Page 33: Gases天然气石油的分馏
Page 37 and 38: 天然气的优缺点AdvantagesAmpl
Page 39: Precautions• Difficulty with extr

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