A.P B.G C.1 D.2
A.1G B.2G C.1P D.2P
A.艙頂設(shè)計壓力>100Kpa B.艙頂設(shè)計壓力≥70Kpa C.艙頂設(shè)計壓力>70Kpa D.艙頂設(shè)計壓力>60Kpa