This picture is __________ you.[ ]
A. with
B. at
C. for
答案:C
正常情况下气管插管的尖端距离气管隆突约()
A.上2~3cm
B.下2~3cm
C.上3~4cm
D.下3~4cm
E.上0~1cm
颈前三角区分为________、________、________、________ 。