A.Chart No.1
B.Catalog of Charts
C.IMO Practical Navigator
D.IMO Light List
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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
A.with
B.in
C.by
D.to
最新試題
A chart projection depicting the poles and a small area on either side of a connecting meridian，that is sometimes used for star charts，is the（）.
The maximum difference between mean time and apparent time is （）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
The arrangement of charts in the catalogue is（）.
The revision date of a chart is printed on which area of the chart? （）
A chart position enclosed by a square is a（n）（）.
The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．
On a Mercator chart，1 nautical mile is equal to（）.
What defines a great circle? （）
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.