270.Is it correct that the faster a car travels, the more fuel-efficient it is?
(A) Correct, driving at high speedshortens travel time and therefore saves fuel.
(B) Correct, as long as a constant high speed ismaintained, it is always the most fuel-efficient.
(C) Incorrect, excessively high speeds increase windresistance and fuel consumption.

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這題在考什麼觀念 本題測驗 車速與燃油效...
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