A.15%-19% B.20%-24% C.25%-29% D.30%-34% E.35 9/6-40%
A.低流量、高濃度持續(xù)給氧 B.低流量、高濃度間斷給氧 C.低流量、低濃度持續(xù)給氧 D.低流量、低濃度間斷給氧 E.高流量、高濃度持續(xù)給氧
A.1-2L/min B.2-4L/min C.4-6L/min D.6-8L/min E.>8L/min