[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: