A、During an engine speed change
B、During a navigational course change
C、Unless the helm is in the“hand”mode
D、All of the above
A、During an engine speed change
B、During a navigational course change
C、Unless the helm is in the“hand”mode
D、All of the above
时间:2022-01-03 14:23 关键词: STCW公约的有关内容 水路交通运输技能考试 海船船员考试
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