单项选择题
A.Top center
B.Lower-left corner
C.Part of the chart title
D.Any clear area around the neat line
单项选择题 The path that a vessel is expected to follow，represented on a chart by a line drawn from the point of departure to the point of arrival，is the（）.
单项选择题 The only cylindrical chart projection widely used for navigation is the （）.
单项选择题 The numeral in the center of a wind rose circle on a pilot chart indicates the （）.