单项选择题
A.try to find out where the oil is coming from
B.call the Master
C.have the pump man check the discharge piping
D.shutdown operations
单项选择题 When you notice oil on the water near your vessel while taking on fuel, you should FIRST （）.
单项选择题 Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an（）.
单项选择题 While loading bulk oil, you notice oil on the water near the bargeWhich of the following actions should you carry out FIRST?（）