單項選擇題When you are firing a pyrotechnic distress signal,it should be aimed().

A.horizontally and directly abeam of your vessel
B.at the vessel whose attention you want to attract
C.into the wind
D.at greater than 60 degrees above the horizon


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1.單項選擇題When two vessels are in immediate danger of collision,the stand-on vessel must().

A.abandon ship
B.assist in taking whatever action is necessary to avoid collision
C.hold course and speed
D.sound a distress signal

2.單項選擇題What is NOT a distress signal?()

A.Red flares or red rockets
B.Continuous sounding of fog signaling apparatus
C.International Code Flags November and Charlie
D.Basket hanging in the rigging

3.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

4.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

5.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

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