问题:
A . When the vessel is in an overloaded condition
B . When the vessel has arranged for both duplication of equipment AND shore-based maintenance
C . When the vessel has replaced a required piece of GMDSS-related equipment but its performance has not been verified or logged
D . When the vessel is carrying only two licensed GMDSS Radio Operators and is capable of performing all required functio
● 参考解析
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