在石油价格飞涨的今天,生物燃料作为一种“清洁能源”广受瞩目,目前,欧美国家已开始小规模使用玉米芯发酵的乙醇燃料和提炼自大豆等油料植物的生物柴油。然而,部分科学家对生物燃料的能量转换效率和经济性还存在疑问。美国研究人员指出,生物燃料的效率是不容置疑的。他们对美国生物燃料生产的分析表明,无论乙醇燃料还是生物柴 At a time when oil prices are soaring, biofuels have drawn much attention as a “clean energy”. At present, the European and American countries have started to use small-scale ethanol fuel that is fermented by corncobs and biodiesel extracted from oil plants such as soybeans. However, some scientists have questions about the energy conversion efficiency and economy of biofuels. American researchers pointed out that the efficiency of biofuels is beyond doubt. Their analysis of biofuel production in the United States shows that either ethanol fuel or biodiesel