30.The course and __________ of the vessel causing the oil pollution are 030 degrees and 15 knots, respectively. (A)deadweight (B)speed (C)gross tonnage (D)air draft

8.翻譯：危險急迫嗎？是的，有穩定度減小的危險。 (A)Is danger imminent? Yes, danger of damage by sea. (B)Is danger imminent? Yes, danger of decreasing stability. (C)Is danger imminent? Yes, danger of breaking apart. (D)Is danger imminent? Yes, danger of environmental pollution.