单项选择题
Prior to burning or welding on a fuel tank on a ship，regulations require that an inspection be made. An entry in the unofficial logbook is required if this inspection is made by（）.
A.a marine chemist B.the Officer in Charge，Marine Inspection C.the Master or person in charge of the ship D.the National Fire Protection Association
单项选择题 Official proof of a Chinese vessel’s nationality is contained in the（）.
单项选择题 Never make comment，estimate or guess in your Logbook，but（）only.
单项选择题 Logbooks are used to record the events occurring when（）.
