本题目来源于试卷: Physics Unit15: Laws of Thermodynamics，类别为 通用国际物理
[单选题]
One of the most efficient engines built so far has tr/bnkc:( b2u vhe f m7o5*kuq fx5zollowing characteristics: combustion chfuk 55 xozq7m*amber temperature = $1900 ^{\circ}C$, exhaust temperature = $430 ^{\circ}C$, $7.0 \times 10^{9} \; cal$ of fuel produces $1.4 \times 10^{10} \; J$ of work in one hour. What is the power output of this engine?
A. $5.2 \; kW$
B. $6.1 \; kW$
C. $7.4 \; kW$
D. $8.3 \; kW$
参考答案: A
本题详细解析:
暂无
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