When your vessel is proceeding to congested waters, ____is used to determine the exact ranges of other ships or objects in the vicinity. A. VDR B. GPS C. DF D. RadarA、aB、bC、cD、d-易过题库-题库最全的搜题网站

When your vessel is proceeding to congested waters, ____is used to determine the exact ranges of other ships or objects in the vicinity. A. VDR B. GPS C. DF D. Radar

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