单项选择题
A vessel in ocean service that does not have an approved means of processing oily bilge slops or oily ballast must have（）.
A.a fixed piping system for ballast discharge to a reception facility B.a discharge outlet for the ballast system on each side of the weather deck C.one portable adapter for a shore connection to the ballast line D.All of the above
单项选择题 A vessel emitting harmful substances into the air or spilling oil into the sea is a（）.
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（）.
