单项选择题
A.a damaged pneumercator line
B.a puncture, crack, or hole in the skin of the vessel
C.improper record keeping of fuel transfer activities
D.contamination of the contaminated steam supply system
单项选择题 An International Oil Pollution Prevention Certificate (IOPP) for a "new" vessel ceases to be valid if （）.
单项选择题 Which of the following liquids can ordinarily be discharged overboard without being processed through an oily water separator?（）
单项选择题 To determine that a compartment contains sufficient oxygen to sustain life, you should use a/an （）.