单项选择题
A.wreck B.shoal area C.anchorage area D.middle ground
A yellow buoy may exhibit a(n)（）.A.fixed red lightB.fla...
单项选择题A yellow buoy may exhibit a(n)（）.
A.fixed red light B.flashing light C.white light D.occulting light
A white buoy with an orange rectangle on it displays（）....
单项选择题A white buoy with an orange rectangle on it displays（）.
A.directions B.dangers C.exclusion areas D.All of the above
A white buoy with an open-faced orange diamond on it in...
单项选择题A white buoy with an open-faced orange diamond on it indicates（）.
A.danger B.vessels are excluded from the area C.the buoy is a mooring buoy D.operating restrictions are in effect
