How should cargo tank hatches be protected when the ullage opening is open and the tank not gas free?（）. -题库考试答案搜索网

How should cargo tank hatches be protected when the ullage opening is open and the tank not gas free?（）.

单选题

2022-02-23 02:37

A、With gooseneck vents
B、With warning signs
C、With flame screens
D、With pressure-vacuum relife valve

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正确答案

C

试题解析

标签：航海英语综合练习

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