Deck_2014 : General Navigation - 728/2111
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| On navigational aids, what does the light characteristic "Fl(2+1)" mean? |
| A) A flashing light combined with a fixed light of greater brightness |
| B) Light flashes combined in groups, with a different number of flashes in each group |
| C) A light showing groups of two or more flashes at regular intervals |
| D) A fixed light varied at regular intervals by groups of two or more flashes of greater brightness |
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