单项选择题
A.Any internal transfer of oil cargo during a voyage
B.The discharge overboard in port or at sea of any bilge water accumulated in machinery spaces
C.The loading or unloading of any or all oil cargo
D.All of the above
单项选择题 The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the （）
单项选择题 Which of the following statements describes one of the functions of the ballast system?（）
单项选择题 The abbreviation "GM" is used to represent the （）