A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）. -题库考试答案搜索网

A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.

单选题

2022-02-24 18:38

A、displaying code letter Y (Yankee)
B、sounding five short blasts on his whistle
C、displaying code numeral 5
D、sounding one prolonged blast on his whistle

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正确答案

A

试题解析

标签：狭水道、冰区与运河航行

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