單項選擇題What is NOT a distress signal?（）

A.A continuous sounding of the fog horn
B.Firing a gun every minute
C.Five or more short rapid blasts on the whistle
D.A square flag and ball flown from the mast


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1.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

2.單項選擇題The radiotelegraph alarm signal may be used to announce（）.

A.that a distress message will follow
B.a request for assistance in searching for a man overboard
C.an urgent warning about a cyclone
D.All of the above

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 MSA station FIRST
C.be transmitted as a series of short messages，if time allows
D.include the vessel's draft

5.單項選擇題On every vessel，distress signals must be stowed（）.

A.on or near the navigating bridge
B.on the flying bridge not closer than 15 feet to any bulkhead
C.above the freeboard deck away from heat
D.in an enclosed space below the freeboard deck away from heat