单项选择题

Who is in charge of oil spilling ? （）

A. Second officer.
B. Third officer.
C. Captain.
D. Bosun.

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单项选择题
Lifeboat launching is operated （）.

A.quarterly
B.annually
C.monthly
D.yearly
单项选择题
NO.2 lifeboat is located on （）side.

A.starboard
B.both
C.each
D.port
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