A VESSEL，OTHER THAN A RESCUE UNIT，DESIGNATED TO CO-ORDINATE SURFACE SEARCH AND RESCUE OPERATION WITHIN A SPECIFIED AREA is known as（）.
A . salving vessel
B . Co-ordinator surface search
C . MERSAR
D . the vessel being salved
时间：2022-09-19 02:44:56
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A . are not the same color as either side light
B . have a lesser range of visibility than the prescribed lights
C . do not impair the visibility or distinctive character of the prescribed lights
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A . red star shell
B . searchlight
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A . a lifeboat drill be held within 12 hours prior to departure
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When shall the stand-on vessel in a crossing situation take action to avoid the other vessel（）.
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A . Salving vessel
B . Co-ordinator surface search
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