单项选择题
A.500ml B.1000ml C.1500ml D.2000ml E.2500ml
A.600ml+日需量(晶:胶=1:1) B.450ml+日需量(晶:胶=1.5:1) C.540ml+日需量(晶:胶=2:1) D.1000ml+日需量(晶:胶=1:2) E.300ml+日需量(晶:胶=1:0.5)
A.1/2 B.3/5 C.1/4 D.1/3 E.2/3