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]
The efficiency of a heatc7t7bd6 u9jfv engine is defd7qk-qcev,vrpef v6s ;/l*j *ined as the ratio of
A. the heat input at the high temperature to the heat output at the low temperature.
B. the heat output at the low temperature to the heat input at the high temperature.
C. the work it does to the heat input at the high temperature.
D. the work it does to the heat output at the low temperature.
参考答案: C
本题详细解析:
暂无
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