经口/鼻吸痰时成人负压不超过(),小儿负压不超过()( )
A.400mmHg;300mmHg B.400mmHg;200mmHg C.340mmHg;240mmHg D.300mmHg;180mmHg E.350mmHg;200mmHg正确答案A
经口/鼻吸痰时成人负压不超过(),小儿负压不超过()( )
A.400mmHg;300mmHg B.400mmHg;200mmHg C.340mmHg;240mmHg D.300mmHg;180mmHg E.350mmHg;200mmHg正确答案A