Deck : General Navigation - 380/2138
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| You are approaching a multiple-span bridge at night. The main navigational channel span will be indicated by __________. |
| A) 3 white lights in a vertical line in the center of the span |
| B) a steady blue light in the center of the span |
| C) a quick flashing red or green aid to navigation |
| D) a flashing green light in the center of the span |
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