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Fuel cells are versatile as they can scale up easily and meet a variety of power needs – large or small.You can（）individual fuel cells to increase the amount of power they can provide.The taller the stack， the more power you have.

Fuel cells are versatile as they can scale up easily and meet a variety of power needs – large or small.You can（）individual fuel cells to increase the amount of power they can provide.The taller the stack， the more power you have.
A.install
B.stack
C.divide
D.separate
正确答案：stack

标签：能源英语面面观

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