Physics Unit12: Sound (id: bcce03f62)

本题目来源于试卷: Physics Unit12: Sound，类别为 通用国际物理

[单选题]
When sound passes from air into w5t xuogyn)ng bu4h( k rqexu-y z42;-:aterpgfi gj9ai.b8k4gf o1 ,vc*-h kgm7 k,

A. its wavelength does not change.
B. its frequency does not change.
C. its velocity does not change.
D. all of the above


参考答案:  B


本题详细解析: 暂无

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