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 sounap3 j.0pk: ,oi5 weekfmx-w)gded together and a particular beat frequencyxb1c pm avy935 0b,fdv is heard. What happens to the beat frequency if the frequency of one of the tones ism53 xdva09 yp,vfb 1bc 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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