单项选择题
A.should be passed close aboard on either side B.indicates that special caution is required C.is used at a channel bifurcation or junction D.is painted with red and white vertical stripes
A great circle track provides the maximum saving in dis...
单项选择题A great circle track provides the maximum saving in distance on（）.
A.easterly courses in high latitudes B.southerly courses in high latitudes C.westerly courses in low latitudes D.easterly courses in low latitudes that cross the equator
A gnomonic projection is based on a(n)（）.A.plane tangen...
单项选择题A gnomonic projection is based on a(n)（）.
A.plane tangent at one point B.cylinder tangent at the equator C.cone tangent at one parallel D.infinite series of cones tangent at selected parallels
（）refers to the angle between true North and the headin...
单项选择题（）refers to the angle between true North and the heading line of the ship.
A.True position B.True meridian C.True course D.True bearing
