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  3. What proportion of the world’s electricity supply is provided by hydroelectric p

What proportion of the world’s electricity supply is provided by hydroelectric p

游客2023-09-15  48
问题 What proportion of the world’s electricity supply is provided by hydroelectric power? [br] The origin of hydroelectric power is the ______ produced when water obeys the laws of gravity.
选项
答案 kinetic energy
解析 本题考查水力发电的原始能源，也就是转化为电力的能源。该段首句提到，Hydroelectric plants convert the kinetic energy within falling water into electricity，即水利发电站把水流落下产生的动能转换成电能，其中water obeys the laws of gravity对应falling water，故答案为kinetic energy。
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