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超声波与次声波

> 大象进行交流的“声音”是一种次声波，人类听不到大象的“声音”是因为 A.大象发出的声音太小 B.次声波无法传到人耳 C.次声波的频率大于20000次/秒 D.次声波的频率小于20次/秒

问题：

发布时间：2024-09-08

大象进行交流的“声音”是一种次声波，人类听不到大象的“声音”是因为

A.大象发出的声音太小
B.次声波无法传到人耳
C.次声波的频率大于20000次/秒
D.次声波的频率小于20次/秒

参考答案：

提问用户：0a***qhe

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