In Terms of Generating Electricity,fuel Cells Are ________ Than Thermal-Conversion

question 25

Multiple Choice

In terms of generating electricity,fuel cells are ________ than thermal-conversion machines because the chemical energy of a fuel is ________.

• A)less efficient;converted into electricity with an intermediate combustion cycle.
• B)less efficient;converted directly into electricity without an intermediate combustion cycle.
• C)more efficient;converted into electricity with an intermediate combustion cycle.
• D)more efficient;converted directly into electricity without an intermediate combustion cycle.
• E)about the same in terms of efficiency;converted into electricity with an intermediate combustion cycle.

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