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 esca5 4;tjyrq r3tol qdz/ je;,3jrsl-+ pipes from a pressuhhw13z uu lu8* a+m 2lychj7w6w)v;fyrized cylinder, the stream of gas feels cool. This is becausehf72 +ja)u 8ywwml*;yc wu613uhvzl h
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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