單項選擇題
A.普魯卡因 B.利多卡因 C.丁卡因 D.可卡因 E.氯乙烷
A.0.25%~0.5% B.0.5%~1% C.1%~2% D.2% E.2%~4%
A.0.25%~0.5%普魯卡因 B.1%~2%利多卡因 C.1%~2%丁卡因 D.0.5%布比卡因和1:200000腎上腺素 E.4%利多卡因