环氧乙烷灭菌器每（）个月更换一次油水分离器的粗滤芯。

A.40%~85%
B.45%~85%
C.50%~85%
D.55%~85%

A.0.5Kg/cm²
B.1.5Kg/cm²
C.2.5Kg/cm²
D.3.5Kg/cm²

A.柜内总体积的70%
B.柜内总体积的75%
C.柜内总体积的80%
D.柜内总体积的90%