单项选择题
A.Deviating from a planned route B.Approach to waypoints and other critical points C.Light house detecting D.Larger scale chart available
（）is not a factor which will affect the accuracy of GPS...
单项选择题（）is not a factor which will affect the accuracy of GPS receiver.
A.detective Availability B.local environmental conditions C.autonomous mode versus differential correction mode versus RTCM mode D.the averaging of recorded locations
（）is a digitized“picture”of a chart.A.Vector chart form...
单项选择题（）is a digitized“picture”of a chart.
A.Vector chart format B.Raster chart data C.pixel D.Electronic Nautical Chart
The heading of a vessel is indicated by what part of th...
单项选择题The heading of a vessel is indicated by what part of the compass? （）
A.Card B.Needle C.Lubber's line D.Gimbals
