单项选择题

连续超声波移动法小剂量的治疗强度为

A.0.5~0.8W/cm 2
B.0.9~1.2W/cm 2
C.1.3~2.0W/cm 2
D.1.0~1.4W/cm 2
E.1.5~2.0W/cm 2