Physics Unit12: Sound (id: 8cf04f0d0)

本题目来源于试卷: Physics Unit12: Sound，类别为 国际高中通用物理

[单选题]
In order to produce beatecoq 9 a/mil8jn (hlp8sqt5/)s, the two sound waves should hn 7gv g(6(fmoxave

A. the same amplitude.
B. slightly different amplitudes.
C. the same frequency.
D. slightly different frequencies.


参考答案:  D


本题详细解析: 暂无

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