题目内容

日常生活中常用摄氏度表示温度。摄氏温度t与热力学温度T之间的数值关系为（）。

A. t=T
B. T=t+273.15
C. t=T-200
D. t=T-250

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对于理想气体系统来说，在下列过程中，哪个过程系统所吸收的热量、内能的增加量和对外作的功三者为负值？（）

A. 等容降压过程
B. 绝热膨胀过程
C. 等温膨胀过程
D. 等压压缩过程

气体分子的平均平动动能只与温度有关。（）

A. 对
B. 错

Both Walt Whitman and Emily Dickinson are accredited Romantic poets during the first half of the 19thcentury in the United States, yet they are contrasting in various ways. Please compare the two poets. You may want to talk about their life experiences, their stylistic features as well as their poetic qualities, and of course, many other aspects. You should write an essay entitled “A Comparative Review of Walt Whitman and Emily Dickinson” in no less than 200 English words.

相干波的条件是振动频率相等、相位差恒定以及

A. 传播方向相同
B. 振幅相等
C. 振动方向相同
D. 传播方向相反