单项选择题
The chart of a beach area shows a very flat slope to the underwater beach bottom. What type of breakers can be expected when trying to land a boat on this beach? （）
A.Surging B.Spilling C.Plunging D.Converging
单项选择题 The buoy symbol printed on your chart is leaning to the northeast. This indicates （）.
单项选择题 The agonic line on an isomagnetic chart indicates the （）.
单项选择题 Solid green arrows on the main body of a pilot chart indicate （）.
