单选题A continuous sounding of a fog-signal apparatus indicates（）.Athe vessel is in distressBthe vessel has completed loading dangerous cargoCit is safe to passDthe vessel is anchored
单选题
A continuous sounding of a fog-signal apparatus indicates（）.
A
the vessel is in distress
B
the vessel has completed loading dangerous cargo
C
it is safe to pass
D
the vessel is anchored
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