A.0.80~0.85 B.0.85~0.90 C.0.90~0.92 D.0.92~0.95
A.21%~40% B.21%~50% C.30%~40% D.21%~60%
A.脉搏血氧饱和度仪 B.心电监护仪 C.呼气末二氧化碳监测仪 D.肺功能监护仪