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[主观题]
人耳最敏感的声音频率范围是()A.16~20000HzB.50~5000HzC.300~5000HzD.1000~4000Hz
人耳最敏感的声音频率范围是()
A.16~20000Hz
B.50~5000Hz
C.300~5000Hz
D.1000~4000Hz
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人耳最敏感的声音频率范围是()
A.16~20000Hz
B.50~5000Hz
C.300~5000Hz
D.1000~4000Hz
在音频范围内,人耳最敏感的振动频率为()
A. 16~100Hz
B. 100~1000Hz
C. 1000~3000Hz
D. 4000~6000Hz
E. 7000~10000Hz