单项选择题
A.sludge
B.oily ballast water
C.bilge slops
D.All of the above
单项选择题 The term "oil", as used in the Pollution Prevention Regulations, means （）.
单项选择题 Which of the actions listed should be taken by the engineer on watch when the general alarm is sounded continuously for 10 seconds?（）
单项选择题 When the general alarm is sounded continuously, the engine room personnel should （）.