本题目来源于试卷: Physics Unit12: Sound，类别为 通用国际物理
[单选题]
Two pure tones are sounded togethenf+pso d4y2yzk-vq) 3r and a particular beat frequenrjee o t fpmj(pel3+25/vp0/m cy is heard. What happens to the beat frequency if the frequency of one of the ton3/lrfop5mje/ (ejpm 2+ p0t eves is increased?
A. It increases.
B. It decreases.
C. It does not change.
D. It could either increase or decrease.
参考答案: D
本题详细解析:
暂无
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