單項選擇題The service life of distress signals must be not more than（）.

A.forty two months from the date of manufacture
B.thirty six months from the date of the last inspection
C.twenty four months from the date of approval
D.twelve months from the date of purchase


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1.單項選擇題The regulations require that inspected vessels on an international voyage，other than small passenger vessels，must carry which of the following distress signals on or near the navigating bridge?（）

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

2.單項選擇題The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within（）.

A.the distance of visibility
B.1/2 the distance of visibility
C.a distance appropriate to the existing circumstances and conditions
D.the distance that it would require for the propeller to go from full ahead to full astern

3.單項選擇題The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.

A.ALWAYS be included in the initial distress message
B.be sent to a Coast Guard station FIRST
C.be transmitted as a series of short messages，if time allows
D.include the vessel's draft

4.單項選擇題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? （）

A.CSS duties are always assumed by passenger vessels，dry cargo vessels，or tankers in that order of precedence
B.The CSS must be established by mutual agreement between the ships concerned
C.A tank vessel should never be assigned CSS duties unless only tank vessels are present
D.The first vessel to arrive at the distress incident is designated as the CSS

5.單項選擇題If your vessel is underway in fog and you hear one prolonged and three short blasts，this indicates a（）.

A.vessel not under command
B.sailing vessel
C.vessel in distress
D.vessel being towed