A.1000Hz
B.1000kHz
C.10MHz
D.100MHz
E.1000MHz
[单选题]1GHz等于多少HzA.1000HzB.1000kHzC.10MHzD.100MHzE.1000MHz
[单选题]低频电疗法采用电流的频率为A.0~1000HzB.1~100kHzC.100kHz以上D.0~1000MHzE.1~100MHz
[单选题]1GHz等于( )。A.1000HzB.1000kHzC.100MHzD.10MHzE.1000MHz
[单选题]1GHz等于( )。A.100kHzB.1000HzC.100MHzD.1000kHzE.1000MHz
[单选题]1GHz等于多少HzA.1000HzB.1000kHzC.100MHzD.10MHzE.1000MHz
[单选题]奔腾Ⅳ的CPU的主频1GHz,等于()A . 1ns-1B . 100ns-1C . 10-1s-1D . 10-9s-1
[单选题]干扰电疗法差频为A.0~1000HzB.0~100HzC.50~200HzD.0~50HzE.100~200Hz
[单选题]干扰电疗法其差频为A.0~1000HzB.0~100HzC.50~200HzD.0~50HzE.100~200Hz
[单选题]医用中电频电流的频率范围是A.1~10HzB.10~20kHzC.1~100kHzD.10~100kHzE.20~100kHz
[单选题]受噪声损害最早、最明显的听阈是A.1000HzB.2000HzC.4000HzD.6000HzE.8000Hz