A.Gray lines on the uppermost inset chart
B.Red lines on the main body of the chart
C.In parenthesis on the lines of equal magnetic variation
D.Annual rate of change is not shown
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A.Chart No.1
B.Catalog of Charts
C.IMO Practical Navigator
D.IMO Light List
A.points of equal variation
B.points of zero variation
C.the magnetic latitude
D.magnetic dip
A.magnetic latitudes
B.magnetic declinations
C.dip
D.isogonic lines
A.complete and often very poor surveys
B.correct and often very good surveys
C.inadequate and often very old surveys
D.adequate and present surveys
A.equipment's
B.tools
C.apparatus
D.aids
最新試題
The path that a vessel is expected to follow，represented on a chart by a line drawn from the point of departure to the point of arrival，is the（）.
Which aid is NOT marked on a chart with a magenta circle? （）
The revision date of a chart is printed on which area of the chart? （）
What defines a great circle? （）
What information is found in the chart title? （）
The shoreline on charts generally represents the mean（）.
That the scale of any part of a chart to be larger than the scale of the survey is（）.
Every chart is liable to be incomplete（）.
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.