单项选择题
A.Weight of the vehicles
B.Geographical area of the voyage
C.Dynamic forces under adverse weather conditions
D.All of the above
单项选择题 Which can be prevented only by segregating two lots of cargo into separate holds? （）
单项选择题 Which action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）
单项选择题 When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold，you should（）.