挑战习题
1/5单选题
难度:

1.

下列不是利用声传递信息的是(  )


A

远处隆隆的雷声预示着可能有一场大雨

B

用超声波击碎人体内的结石

C

医生利用B超观察人的身体状况

D

有经验的人选瓷碗总是敲一敲

提示1:
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正确答案:Qg==
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