A.a small error in bearing or in laying it down on the chart has a greater effect in misplacing the position the longer the line to be drawn
B.all scales are kept updated for vital information by Notices to Mariners
C.the larger the scale of the chart，the greater the detail that can be shown on it
D.the mariner using the medium scale charts for passage along a coast need not transfer on to a large scale for short distances
您可能感興趣的試卷
你可能感興趣的試題
A.1 minute of longitude
B.1 degree of longitude
C.1 minute of latitude
D.1 degree of latitude
A.the final judge of the reliance the mariner can place on the information given
B.its immediate importance cannot always be verified before promulgation
C.through imperfections in the survey on which it is based，or subsequent alterations to the topography or sea floor
D.deferring the promulgation of certain less important information
A.National Geospatial-Intelligence Agency
B.Coast Guard
C.Naval Observatory
D.National Ocean Service
A.sailing chart
B.general chart
C.coastal chart
D.harbor chart
A.Azimuthal gnomonic projection
B.Lambert conformal projection
C.Transverse Mercator projection
D.Polyconic projection
最新試題
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
A chart position enclosed by a square is a（n）（）.
Every chart is liable to be incomplete（）.
Charts showing the coast of Mexico are produced by the United States（）.
The shoreline on charts generally represents the mean（）.
When a buoy is in position only during a certain period of the year，where may the dates when the buoy is in position be found?（）
Which information is found in the chart title（）.
The revision date of a chart is printed on which area of the chart? （）
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.