A.20—100Hz
B.200—900Hz
C.1000—3000Hz
D.4000—10000Hz
[单选题]人最敏感的声波频率范围是()。A.20—100HzB.200—900HzC.1000—3000HzD.4000—10000Hz
[单选题]人最敏感的声波频率范围是()。A.20—100HzB.200—900HzC.1000—3000HzD.4000—10000Hz
[单选题]耳对声波最敏感的频率范围是()A .20~20000HzB .500~2000HzC .1000~3000HzD .125~8000HzE .8000~18000Hz
[单选题]人耳对声波最敏感的频率范围是()A.20~20000HzB.500~2000HzC.1000~3000HzD.125~8000HzE.8000~180
[单选题,A2型题,A1/A2型题] 人耳对声波最敏感的频率范围是()A . 20~20000HzB . 500~2000HzC . 1000~3000HzD . 125~8000HzE . 8000~18000Hz
[单选题]人耳最敏感的声波频率范围为( )。A.20~100HzB.200~900HzC.1000~3000HzD.4000~10000Hz
[单选题]人耳对声波最敏感的频率范围是 ( )A.20~20000HzB.500~2000HzC.1000~3000HzD.125~8000HzE.8000~18000Hz
[单选题]人最敏感的声波是().A . 300---800赫兹B . 400---1000赫兹C . 500---1200赫兹D . 600---1400赫兹
[单选题]人最敏感的声波是()赫兹。A . 200~800B . 300~900C . 400~1000D . 500~1200
[单选题]人体对水平振动最敏感的频率范围是()Hz。A . 0-2B . 2-4C . 4-6D . 4-8