单项选择题
（）is not an alarm required by IMO standards to be available on the ECDIS.
A.Deviating from a planned route
B.Approach to waypoints and other critical points
C.Light house detecting
D.Larger scale chart available
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相关考题
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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 -
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 -
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
