本题目来源于试卷: 1st Law of Thermal Dynamics，类别为 美国物理杯赛(Physics Bowl)
[单选题]
03.28: When gas escapes from a pressutc k-u kz8qi/m+l g;:3dxyvb 4rized cylinder, the stream of gas feel qvlntv9 3xa;xp-9x h.7ce9tl0f hk5zs cool. Thisxf095h;t7xxe 99 tah3q- vpklnz.vcl is because
A. work is being done at the expense of thermal energy
B. of the convection inside the cylinder
C. pressurized cylinders are good thermal insulators
D. the gas inside the cylinder is actually frozen
E. the moisture in the air condenses and cools
参考答案: A
本题详细解析:
暂无
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