单项选择题
In the Oil Record Book, a comprehensive list of operational items are grouped into operational sectionsEach section is codified by a/an （）.
A.number B.abbreviation C.letter D.All of the above
单项选择题 The difference between the starboard and port drafts caused by a transverse shift in weight is （）.
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 （）.
