单项选择题
A.0.25 B.0.30 C.0.35 D.0.40
A.1-2ml B.2-3ml C.3-4ml D.4-6ml
A.乙醇,25%~28% B.乙醇,20%~25% C.丙酮,25%~28% D.丙酮,20%~25%