A.1~10Hz
B.10~20kHz
C.1~100kHz
D.10~100kHz
E.20~100kHz
[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]医用中频电流的频率范围是A.100~1000HzB.1000~2000HzC.1000~100000HzD.2000~100000HzE.2000~1
[单选题,A2型题,A1/A2型题] 医用中频电流的频率范围是()A . 100~1000HzB . 1000~2000HzC . 1000~100000HzD . 2000~100000HzE . 2000~1000000Hz
[单选题]医用低频电流的频率范围是多少HzA.0~100HzB.0~1000HzC.0~10000HzD.0~100000HzE.0~1000000Hz
[单选题,A2型题,A1/A2型题] 医用超短波电流的频率为()A . 13.56MHzB . 24.50MHzC . 27.12MHzD . 40.68MHzE . 433.92MHz
[单选题]医用高频电流的频率范围是A.1000Hz以上B.10000Hz以上C.100000Hz以上D.1000000Hz以上E.10000000Hz以上
[填空题] 医用高频电按照波长频率可分为:______、_____、______、________、_________五个波段。
[单选题]频系统工作频率范围为()。A .18、00~136、975kHzB .30~30kHzC .8、00~136、975MHzD .118、00~136、975MHZ
[单选题,A2型题,A1/A2型题] 短波电流的频率范围是()。A . 3~30MHzB . 30~50MHzC . 50~60MHzD . 60~80MHzE . 100MHz
[单选题]短波电流的频率范围是A.3~30MHzB.30~50MHzC.50~60MHzD.60~80MHzE.100MHz