单项选择题
When there is not a chief officer on board,（）should keep and write up the ship’s logbook.
A.the assistant officer B.the captain C.the officer on duty D.the third officer
单项选择题 Which one of two crossing power-driven vessels has the right of way in a fog?（）.
单项选择题 Write down your name（）,please.
单项选择题 You are running into danger,（）.
