单项选择题
A.12 hand red flares
B.12 rocket parachute flares
C.12 hand combination flares and orange smoke signals
D.6 hand red flares，and 6 hand orange smoke signals
单项选择题 The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within（）.
单项选择题 The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.
单项选择题 Several merchant ships are arriving at the scene of a distress incident. One of the them must assume the duties of the Coordinator Surface Search (CSS). Which of the following statements is TRUE? （）