单选题A rigid replica of the International Code flag “A” may be shown by a vessel （）.Apulling a submarine cableBengaged in diving operationsCengaged in underway replenishmentDtransferring explosives
单选题
A rigid replica of the International Code flag “A” may be shown by a vessel （）.
A
pulling a submarine cable
B
engaged in diving operations
C
engaged in underway replenishment
D
transferring explosives
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