单项选择题
According to the regulations for mobile offshore drilling units，“industrial personnel” are considered to be all persons carried on the ship for the sole purpose of carrying out the industrial business of the unit，except for（）.
A.the operator's representative B.the crew required by the Certificate of Inspection C.the galley personnel D.the designated person in charge
单项选择题 A ship must report a collision with an aid to navigation maintained by the Coast Guard to which office?（）
单项选择题 A load line for a ship is assigned by the（）.
单项选择题 A chain stripper is used to（）.
