单项选择题
A.5min B.10min C.20min D.25min E.30min
A.同侧上臂内侧 B.同侧上臂外侧 C.对侧前臂掌侧下段 D.同侧前臂掌侧下段 E.对侧前臂掌侧上段
A.0.1% B.0.2% C.0.3% D.0.4% E.0.5%
A.0.5ml B.1ml C.2ml D.3ml E.5ml
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