单项选择题
A.0.02ml B.0.06ml C.0.1ml D.0.15ml E.0.2ml
A.0.1ml B.0.15ml C.0.2ml D.0.25ml E.0.3ml
A.<1mm B.1~1.5mm C.1.5~2mm D.2~2.5mm E.2.5~3mm