A vessel servicing a pipeline during the day shall display().

A . three black shapes in a vertical line; the highest and lowest are balls,and the middle one is a diamond B . three shapes in a vertical line; the highest and lowest are red balls,and the middle one is a white diamond C . three black balls in a vertical line D . two black balls in a vertical line

时间:2022-08-29 14:55:02 所属题库:救助合同与救助公约题库

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