What emitted from the exhaust pipe of the GM minivan the author drove is so clea

游客2023-09-16  16

问题 What emitted from the exhaust pipe of the GM minivan the author drove is so clean that it is drinkable. [br] To separate hydrogen from oxygen needs electricity that can be created by ______.

选项

答案 fossil fuels and coal

解析 由题干关键词To separate hydrogen from oxygen need electricity定位到第三个小标题下第三段第二、三句。根据这两句可知从氧里分解氢需要用电,而发电又要用到矿物燃料。
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