Physics Unit15: Laws of Thermodynamics (id: 52558cb58)

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]
A heat engine absorbs 64 kcal of heat eaz4,p oly/mmu:fyxg m5sv )u lq.(a*k4ch cycle and exhausts 42 kcal. Calc;dhq2ri6ib wt 7 z6nd-ulate the efficiency of each cycleh br-6itq2dw7i n ;6dz.

A. 34%
B. 66%
C. 50%
D. 150%


参考答案:  A


本题详细解析: 暂无

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