题目内容

气体分子的平均平动动能只与温度有关。()

A. 对
B. 错

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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

在双缝干涉实验中,两条缝的宽度原来是相等的。若其中一缝的宽度略变窄(缝中心位置不变),则

A. 干涉条纹的间距变宽
B. 干涉条纹的间距变窄
C. 干涉条纹的间距不变,但各级暗纹极小处光的强度发生了变化
D. 不再发生干涉现象

在双缝干涉实验中,为使屏上的干涉条纹间距变大,可以采取的办法是

A. 使屏移近双缝
B. 使两缝的间距变小
C. 把两个缝的宽度稍微调窄
D. 改用波长较小的单色光源

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