单项选择题
A.1/5或1/15mlB.1/20或1/60mlC.1/10或1/30mlD.1/2或1/6ml
A.1/4B.1/3C.1/2D.1/5
A.Coleman Ⅳ型B.Coleman Ⅲ型C.Coleman Ⅱ型D.Coleman Ⅰ型