单项选择题
A.异氟烷 B.恩氟烷 C.甲氧氟烷 D.氧化亚氮 E.氟烷
A.1MAC B.0.7MAC C.0.6MAC D.0.5MAC E.1.3MAC
A.50% B.60% C.70% D.80% E.90%