单项选择题
A.one black ball B.two cones with bases together C.a cone，apex downward D.two cones，apexes together
A vessel enagaged in fishing，and at anchor，shall show（）...
单项选择题A vessel enagaged in fishing，and at anchor，shall show（）.
A.an anchor light B.sidelights and a sternlight C.three lights in a vertical line，the highest and lowest being red，and the middle being white D.None of the above
A vessel crossing a river on the Western Rivers has the...
单项选择题A vessel crossing a river on the Western Rivers has the right of way over（）.
A.vessels ascending the river B.vessels descending the river C.all vessels ascending and descending the river D.None of the above
A vessel continually lists to one side and has a normal...
单项选择题A vessel continually lists to one side and has a normal rolling period. Which statement is TRUE?（）.
A.The vessel has negative GM B.The center of gravity is on the centerline C.The list can be corrected by reducing KM D.The vessel has asymmetrical weight distribution
