单项选择题
All bilge suctions must be fitted with suitable （）, which in the machinery space would be mud boxes positioned at floor plate level for easy access.
A.strangers B.relief valves C.emergency valves D.strainers
单项选择题 The emergency bilge suction or bilge injection valve is used to prevent （） of the ship.
单项选择题 Oil Record Book Part I shall be provided to （）.
单项选择题 Which of the following should be recorded in Oil Record Book Part I (machinery space operation) ?（）
