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单选题
On a nautical chart,the inner ring of a compass rose indicates().
A
true directions
B
compass error
C
deviation
D
magnetic directions
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单选题During class, the teacher draws a flow chart on the blackboard to show the structure and its inner connection of a passage.What class do you think is it most possible be?A
Word class.B
Reading and speaking class.C
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单选题Which information does the outer ring of a compass rose on a nautical chart provide().A
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true directionsC
magnetic directionsD
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单选题The compass rose on a nautical chart indicates both variation and ().A
deviationB
annual rate of variation changeC
precessionD
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单选题()is a digitized“picture”of a chart.A
Vector chart formatB
Raster chart dataC
pixelD
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单选题What is an advantage of the magnetic compass aboard vessels?()A
Compass error is negligible at or near the earth's magnetic polesB
It does not have to be checked as oftenC
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All points on the compass rose are readily visible
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Notice to MarinersB
Coast PilotsC
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单选题Magnetic compass deviation().A
varies depending upon the bearing usedB
is the angular difference between magnetic north and compass northC
is published on the compass rose on most nautical chartsD
is the angular difference between geographic and magnetic meridians
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单选题Magnetic information on a chart may be ().A
found in the center(s) of the compass rose(s)B
indicated by isogonic linesC
found in a note on the chartD
All of the above
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