A证旧题库单选1

A ship conducting Ballast Water exchange to meet the standard in regulation D-1 of BWM convention shall,whenever possible,conduct such Ballast Water exchange in water at least ______ in depth, taking into account the Guidelines developed by the Organization

发布于 2021-02-23 18:42:50

【单选题】
A 50 metres
B 100 metres
C 200 metres
D 250 metres

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青云 2023-02-23

生命之长短殊不重要，只要你活得快乐，在有生之年做些有意义的事，便已足够。

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