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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
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2023-09-15
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问题
What proportion of the world’s electricity supply is provided by hydroelectric power? [br] How is the flow rate of a hydroelectric power station quantified?
选项
A、The depth of the water.
B、Volume over time.
C、Speed over time.
D、The width of the water.
答案
B
解析
本题考查水流速的计算方式,故将答案出处定位到第五段。根据上题的分析可知,决定发电站的发电量有两个因素,其中一个是the flow rate,并对其进行了解释:calculated as volume over time,明确指出水流速度通过水流量除以时间(volume over time)来计算,其中quantified≈calculated,故[B]为答案。
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