A.10000Hz
B.1000000Hz
C.1MHz
D.0.1MHz
E.20MHz
[单选题]以下哪一频率不在超声的频率范围A.20000HzB.1000000HzC.1MHzD.0.1HzE.20MHz
[单选题]超声波是一种机械波,频率超过A.10000HzB.20000HzC.30000HzD.40000HzE.50000Hz
[单选题]哪一频率不在超声的频率范围()A.10000HzB.1000000HzC.1MHzD.0.1MHzE.20MHz
[单选题]哪一频率不在超声的频率范围()A.10000HzB.1000000HzC.1MHzD.0.1MHzE.20MHz
[单选题]哪一频率不在超声的频率范围A .10000HzB .1000,000HzC .1MHzD .0.1HzE .20MHz
[单选题]哪一频率不在超声的频率范围A.10000HzB.1000000HzC.1MHzD.0.1MHzE.20MHz
[单选题]哪一频率不在超声的频率范围()A.10000HzB.1000000HzC.1MHzD.0.1MHzE.20MHz
[单选题]哪一频率不在超声的频率范围()A.10000HzB.1000000HzC.1MHzD.0.1MHzE.20MHz
[单选题]关于超声波的频率,下列哪项正确A.2000HzB.5000HzC.10000HzD.15000HzE.25000Hz
[单选题]下列哪项属于超声治疗的超声频率A.10MHzB.3MHzC.1MHzD.80kHzE.40kHz