单项选择题
A.2.0~3.0ml/SB.3.0~4.0ml/SC.3.5~4.5ml/SD.3.0~5.0ml/SE.5.5~6.0ml/S
A.喉部肿瘤B.喉旁脓肿C.喉部炎症D.喉头水肿需紧急切开气管的E.声带息肉
A.2.0~3.0ml/SB.3.0~4.0ml/SC.3.5~4.5ml/SD.4.5~5.0ml/SE.5.5~6.0ml/S