單項(xiàng)選擇題

When you are firing a pyrotechnic distress signal，it should be aimed at（）.

A.straight overhead
B.at the vessel whose attention you are trying to get
C.into the wind
D.about 60 degrees above the horizon

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單項(xiàng)選擇題

When should distress flares and rockets be used? （）

A.Immediately upon abandoning the vessel
B.Only when there is a chance of their being seen by a rescue vessel
C.At one hour intervals
D.At half hour intervals

單項(xiàng)選擇題

When sending a DSC call，the vessel’s（）.

A.position will automatically be sent
B.position will only be sent if the vessel is making a distress call
C.MMSI will indicate its ocean region
D.None of the above

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When you are firing a pyrotechnic distress signal，it should be aimed at（）.

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When should distress flares and rockets be used? （）

When sending a DSC call，the vessel’s（）.

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When you are firing a pyrotechnic distress signal，it should be aimed at（）.

When sending a DSC call，the vessel’s（）.