A.Mercator projection
B.polyconic projection
C.orthographic projection
D.gnomonic projection
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A.Summary of Corrections
B.Local Notice to Mariners
C.Daily Memorandum
D.Chart Correction Card
A.vertical distance from the chart sounding datum to the ocean bottom，plus the height of tide
B.vertical distance from the chart sounding datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
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
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
最新試題
The maximum difference between mean time and apparent time is （）.
The numeral in the center of a wind rose circle on a pilot chart indicates the （）.
Which aid is NOT marked on a chart with a magenta circle? （）
（）is not a position-fixing system.
Which information does the outer ring of a compass rose on a nautical chart provide（）.
The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.
A chart with a scale of 1:80，000 would fall into the category of a（）.
Which chart symbol indicates the bottom is clay（）.
The shoreline on charts generally represents the mean（）.
What information is NOT found in the chart title? （）