单项选择题
A.be interrupted B.move downwards C.move outwards D.retain original position
Which of the following influences the position of the i...
单项选择题Which of the following influences the position of the interface between the liquid seal and the oil in a purifier?（）
A.Height of the machine B.Temperature of the liquid seal C.Gravity disc D.Bowl diameter
Which of the following is NOT on the list items to be r...
单项选择题Which of the following is NOT on the list items to be recorded in Oil Record Book Part I (machinery space operation)?（）
A.Accidental discharge of oil B.Disposal of oil residues C.Quantity of water produced by FWG D.Discharge of dirty ballast or cleaning water from fuel oil tanks
All bilge suctions must be fitted with suitable （）, whi...
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
