A.0-1cm B.1-2cm C.2-3cm D.3-4cm E.4-5cm
A.5s B.6s C.8s D.10s E.15s
A.呼吸道梗阻 B.DIC C.肺大皰 D.循環(huán)衰竭 E.心胸大手術(shù)后