单项选择题
A.leaked into navigable waters
B.poured into navigable waters
C.pumped into navigable waters through a fixed piping system
D.all of the above
单项选择题 If fuel tank levels are found to have increased after a grounding, you should suspect （）.
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?（）