单项选择题
The buoy symbol printed on your chart is leaning to the northeast. This indicates （）.
A.you should stay to the north or east of the buoy B.you should stay to the west or south of the buoy C.the buoy is a major lighted buoy D.nothing special for navigational purposes
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 （）.
单项选择题 On the south and the east coasts of Block Island are circles with a dot in the center and labeled CUP. This is a （）.
