A.They mark the limits of breakers in that area B.These lines warn the mariner of submerged rocks C.They mark the boundary lines of fish trap areas D.These lines warn the mariner of submerged pipelines
A.GL WNG B.GEN SYN C.STM WNG D.TY WNG
A.From B.By C.on D.With
A.Overhead power lines B.Louisiana-Mississippi ferry crossings C.Two railroad trestles D.Two submerged oil pipelines
A.nominal range B.luminous range C.geographical range D.visible range
