单项选择题
The difference between the starboard and port drafts caused by a transverse shift in weight is （）.
A.list B.heel C.trim D.flotation
单项选择题 To prevent the spread of fire by conduction, you should （）.
单项选择题 Each completed page of the Oil Record Book must be signed by the （）.
单项选择题 A shipboard oil pollution emergency plan is required of （）.
