单项选择题
A.24h;1只 B.24h;2只 C.48h;1只
A.5000kJ B.8000kJ C.10000kJ
A.船舶纵倾达10° B.船舶纵倾达10°并向任一舷横倾20° C.船舶纵倾达20°并向任一舷横倾30°