单项选择题
The scuppers should be plugged （）.
A.only if fixed containment is not used B.only if portable containment is not used C.only if fixed containment drains are open D.whenever the vessel is being bunkered
单项选择题 Small oil spills on deck can be prevented from contaminating any waters by （）.
单项选择题 In the event of a small bunker oil spill on deck occurring while bunkering, you should （）.
单项选择题 Radiation can spread a fire by （）.
