A.>1cm B.0.3~0.4cm C.0.5~0.6cm D.0.7~0.8cm E.0.9~1.0cm
A.頻率2~160Hz,脈寬0.1~1ms B.頻率1~100Hz,脈寬0.1~2ms C.頻率2~160Hz,脈寬0.01~0.2ms D.頻率1~160Hz,脈寬2~500μs E.頻率1~100Hz,脈寬1~1000μs
A.5%以下 B.10%以下 C.15%以下 D.30%以下 E.25%以下