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BOTH INTERNATIONAL & INLAND A vessel servicing a pipeline during the day shall display __________. |
A) three black balls in a vertical line |
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 shapes in a vertical line; the highest and lowest are balls, and the middle one is a diamond |
D) two black balls in a vertical line |
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