A.煮沸开始后5~10min添加B.煮沸开始后30min添加C.煮沸结束前5~10min添加D.回旋沉淀期间添加
A.常压水蒸气蒸馏法B.减压水蒸气蒸馏C.超临界CO2萃取D.液态CO2萃取
A.15%~30%B.35%~50%C.50%~65%D.65%~80%