A . 20~20000Hz
B . 10~20000Hz
C . 40~200000Hz
D . 30~200000Hz
[判断题] 只有频率在20~2000Hz范围内的声音人耳才能感觉到,即才能引起听觉。A . 正确B . 错误
[试题]人耳能感觉到的声波频率范围为()A.20~1000HzB.20~2000HzC.20~4000HzD.20~8000HzE.20~20000Hz
[单选题]人耳能感觉到的声波频率范围为()A . 20~1000HzB . 20~2000HzC . 20~4000HzD . 20~8000HzE . 20~20000Hz
[单选题]人耳能感觉到的声波频率范围为()A .20~1000HzB .20~2000HzC .20~4000HzD .20~8000HzE .20~20000Hz
[单选题]人耳能感觉到的声波频率范围为()A.20~1000HzB.20~2000HzC.20~4000HzD.20~8000HzE.20~20000Hz
[单选题]耳能感觉到的声音频率范围是()。A . 200~20000HzB . 20~20000HzC . 200~200000HzD . 20~200000Hz
[单选题]声频率简称声频或频率,度量单位为赫兹(Hz)。人耳能感觉到的声音频率范围是()。A . 20~20000HzB . 200~20000HzC . 200~2000HzD . 20~2000Hz
[单选题]人耳能感觉到的声频范围是A.<20HZB.20~20 000HzC.>2 000HZD.>20 000HZE.200~20 000HZ
[单选题]人耳能感觉到的声频范围是()A . <20HzB . 20~20000UHzC . >20000HzD . 200~2000HzE . >2000Hz
[单选题]人耳能感觉到的声频范围是A.<20HzB.20~20000UHzC.>20000HzD.200~2000HzE.>2000Hz