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You are approaching another vessel and see that she has the signal flag “J” hoisted. What should you do?（）
A:Keep well clear of the vessel because she is on fire and has dangerous cargo on board or she is leaking dangerous cargo
B:Attempt to call the vessel on VHF radiotelephone because she is requesting to communicate
C:Approach the vessel with caution because she is dragging her anchor
D:Proceed on present course and speed since the vessel is requesting a tug

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出自：海船船员证

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