单项选择题
A.numbered B.lettered C.green D.red
A special purpose buoy shall be（）.A.lighted with a whit...
单项选择题A special purpose buoy shall be（）.
A.lighted with a white light B.striped black and red C.lighted with a red light D.yellow
A special mark (yellow buoy)，if lighted，may exhibit whi...
单项选择题A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）
A.Flashing B.Morse A C.Equal interval D.Occulting
A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH O...
单项选择题A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH OR WEST FROM A FIXED POINT，E.G. A WRECK is（）.
A.Entrance buoy B.New buoy C.Port buoy D.Cardinal buoy
