A yellow buoy may mark a(n)（）.
- Awreck
- Bshoal area
- Canchorage area
- Dmiddle ground
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1、A buoy marking a wreck will show a(n)（
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3、A towing light is a yellow light havin
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5、A yellow buoy may exhibit a(n)（）.
A yellow buoy may exhibit a(n)（）.Afixed red lightBflashing lightCwhite lightDocculting light
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6、When a buoy marks a channel bifurcatio
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