单项选择题
Distance along a track line is measured on a Mercator chart by using the （）.
A.latitude scale near the middle of the track line B.longitude scale near the middle of the track line C.latitude scale at the midlatitude of the chart D.latitude or longitude scale at the middle of the scale
单项选择题 Attention is （）the advice on the use of charts in The Mariner’s Handbook Chapter 3，Section 1.
单项选择题 Admiralty Charts are published in （）.
单项选择题 A true bearing of a charted object，when plotted on a chart，will establish a （）.
