单项选择题

When is the most critical time of bunkering in regards to oil pollution?（）

A.lining up the systems
B.topping off
C.starting delivery
D.connecting hoses and joints

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单项选择题

A.draft of the vessel
B.rate of delivery
C.communication with terminal personnel
D.observation of manifold valves

单项选择题

A.be safe if mixed with fresh water
B.prevent seasickness
C.promote urine excretion
D.protect against heat cramps

单项选择题

A.survivors in the water
B.food and water
C.land
D.bad weather