[单选题]
“音频电”疗法所应用的电流是
A.1~2kHz正弦电流
B.1~20kHz正弦电流
C.1~2kHz等幅正弦电流
D.1~20kHz等幅正弦电流
E.10~20kHz等幅正弦电流
参考答案与解析: