30.DSC：Digital_____ Calling 1212( in the GMDSS system).（依據 IMO SMCP） (A). Select (B). Selection (C). Selective (D). Seek

8. For heaving anchor operation, “Anchor aweigh” in practice means: (A). at the moment that anchor leaves the ground. (B). the anchor is still in the water, between the ground and water surface. (C). at the water surface. (D). the anchor is clear from the water surface.