A.variation
B.true directions
C.magnetic directions
D.annual rate of variation change
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A.Cly
B.Cla
C.Cl
D.C
A.In the Coast Pilot
B.In the Nautical Almanac
C.In the List of Lights
D.In the Sailing Directions
A.Feet
B.Yards
C.Fathoms
D.Meters
A.fish trap areas
B.naval exercise areas
C.underwater cables
D.recommended track lines
A.A regulated anchorage
B.Fish trap areas
C.An area closed to the public
D.Underwater cables
最新試題
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
The arrangement of charts in the catalogue is（）.
A chart with a scale of 1:80，000 would fall into the category of a（）.
The soundings on the imperial chart are measured in（）.
The maximum difference between mean time and apparent time is （）.
The shoreline on charts generally represents the mean（）.
The soundings on the chart are based on the depth of water available at （）.
What information is found in the chart title? （）
The survey information upon which a chart is based is found （）.
Particular care is needed when navigating in the vicinity of（）as very few of these features have been fully surveyed to modern standards to determine their correct position，full extent，or the least depth over them.