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超声波传感器的声波频率（）

A、低于16Hz

B、低于10kHz

C、高于10kHz

D、高于20kHz

时间：2021-09-01 23:54 关键词：青书学堂大连工业大学传感器与测试技术机电一体化技术高起专作业1

答案解析

D

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