A.0~1L/min B.1~2L/min C.2~4L/min D.4~6L/min E.6~8L/min
A.鼻導(dǎo)管給氧 B.面罩 C.貯氣囊面罩 D.氧帳 E.Venturi面罩
A.20%~35%正常 B.30%~45%輕度肺氣腫 C.40%~55%中度肺氣腫 D.50%重度肺氣腫 E.以上皆不對