A.52VB.62VC.72VD.82V
A.J285B.J965C.J623D.J533
A.正弦波B.余弦波C.方波D.
A.SB7B.SB8C.SB9D.SB10
A.T5ax/1B.T5ax/2C.T5ax/3D.T5ax/4