单项选择题
A.5ml/kg B.8ml/kg C.10ml/kg D.12ml/kg E.15ml/kg
A.PEEP B.CPAP C.SIMV D.IPPV E.IPPV+PEEP
A.5～10cmH2O B.12～20cmH2O C.25～30cmH2O D.40cmH2O E.50cmH2O
A.1s B.15s C.30s D.1min E.5s
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