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（）.

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• A polyconic projection is based on a （）.

  A . plane tangent at one point B . cylinder tangent at one parallel C . cone tangent at one parallel D . series of cones tangent at selected parallel

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• The revision date of a chart is printed on which area of the chart? （）

  A、Top center B、Lower-left corner C、Part of the chart title D、Any clear area around the neat line

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• A milestone is a significant () in a project.

  A . activity B . event C . phase D . process

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• A chart with a natural scale of 1:160，000 is classified as a（）.

  A . sailing chart B . general chart C . coast chart D . harbor chart

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• A gnomonic projection is based on a(n)（）.

  A . plane tangent at one point B . cylinder tangent at the equator C . cone tangent at one parallel D . infinite series of cones tangent at selected parallel

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• A revised print of a chart is made （）.

  A、when there are numerous corrections to be made or the corrections are extensive B、when a low-stock situation occurs and minor corrections are made C、every two years to update the magnetic variation information D、after every major hydrographic survey of the area covered by the chart

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• The description Racon beside an illustration on a chart would mean a（）.

  A . radar transponder beacon B . radar conspicuous beacon C . radar calibration beacon D . circular radiobeaco

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• A pilot chart does NOT contain information about （）.

  A . average wind conditions B . tidal currents C . magnetic variation D . average limits of field ice

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• （）is a type of bar chart that illustrates a project schedule. It illustrates the start and finish dates of the terminal elements and summary elements of a project.

  A . A、gantt chart B . B、project histogram C . C、milestone chart D . D、project flowchart

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• Which aid is NOT marked on a chart with a magenta circle? （）

  A . Aero light B . Radar station C . Radar transponder beacon D . Radiobeaco

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• When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.

  A、a straight line drawn on the chart approximates a great circle B、the chart should not be used outside of the standard parallels C、the course angle is measured at the mid-longitude of the track line D、Distance cannot be measured directly from the chart

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• A Mercator chart is a （）.

  A、cylindrical projection B、simple conic projection C、polyconic projection D、rectangular projection

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• Magnetic information on a chart may be （）.

  A . found in the center(s) of the compass rose(s) B . indicated by isogonic lines C . found in a note on the chart D . All of the above

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• 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（）.

  A . azimuthal gnomonic projection B . Lambert conformal projection C . transverse Mercator projection D . polyconic projectio

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• Isogonic lines are lines on a chart indicating （）.

  A . points of equal variation B . points of zero variation C . the magnetic latitude D . magnetic di

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• 89. The revision date of a chart is printed on which area of the chart ________.

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• 144. The only cylinder chart projection widely used for navigation is the ____

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• 155. Which conic projection chart features straight lines which closely approximate a great circle? _____

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• 145. A chart has extensive corrections to be made to is. After having been corrected, the chart is printed again and the chart issue is a ___

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• 83. The only cylindrical chart projection widely used for navigation is the _____.

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• 152. When navigating in high latitudes and using a chart based on a Lambert conformal projection , ______

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• A cost cutting project:

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• 39. A mercator chart is a ______

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• 62. A true bearing of a charted object，when plotted on a chart，will establish a ______.

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