单项选择题
A vessel emitting harmful substances into the air or spilling oil into the sea is a（）.
A.Polluter B.Emitter C.Spiller D.Oiler
单项选择题 A ship which is required to carry an Oil Record Book must log in the book（）.
单项选择题 A ship required to carry an Oil Record Book must maintain the book on board for（）.
单项选择题 A Certificate of Financial Responsibility attests that the vessel（）.
