Chart legends which indicate a conspicuous landmark are printed in（）.
Which chart symbol indicates the bottom is clay（）.
Lines on a chart which connect points of equal magnetic variation are called （）.
On a hydrocarbon flammability chart the line which extends from 0% to 21.8% oxygen，lying tangent to the flammability range，is called the（）.
The revision date of a chart is printed on which area of the chart? （）
Which two chart base types can you select using the Chart Wizard?（）
Which information is found in the chart title（）.
The survey information upon which a chart is based is found （）.
Which aid is NOT marked on a chart with a magenta circle? （）
Navigational charts are subject to frequent changes，the important ones of which are promulgated by （）.
X-R Chart有0.27%的错判风险，请问这是什么风险？
Which nautical charts are intended for coastwise navigation outside of outlying reefs and shoals（）.
The line chart is a simple form of graphic representation, in which data are arranged in rows and columns. ( )
89. The revision date of a chart is printed on which area of the chart ________.
25. Which chart abbreviation indicates the bottom is clay?______
200. The survey information upon which a chart is based is found ____.
160. Which aid is NOT marked on a chart with a magenta circle?
255. Which information does the outer ring of a compass rose on a nautical chart provide?
58．Which chart symbol indicates the bottom is clay?
26. Which chart abbreviation indicates the bottom is rock?______
155. Which conic projection chart features straight lines which closely approximate a great circle? _____
104. Navigational charts are _______frequent changes, the important oneof which are promulgated byAdmiralty Notices to Mariners.
In which source could you find the number of a chart for a certain geographic area?
Which bar chart shows the percentage of Asian students who made Australia their first choice destination？
