单项选择题
A.距离下颌下缘1cm处切开B.距离下颌下缘2cm处切开C.距离下颌下缘3cm处切开D.距离下颌下缘切开
A.下牙槽神经阻滞麻醉B.下牙槽神经及舌神经阻滞麻醉C.下牙槽神经及颊神经阻滞麻醉D.下牙槽神经阻滞麻醉、颊神经及舌神经阻滞麻醉
A.0.41~0.60B.0.61~0.80C.0.70~0.90D.0.81~1.0