A.Amphibious training areas
B.Grounds for dredge spoil
C.Fish trap areas
D.Gunnery exercise areas
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A.on a regional basis
B.on a national basis
C.shown orderly
D.appeared from A to W
A.very rare
B.common
C.often
D.reasonable
A.SW of Cocos Islands
B.oceanic dangers or seamounts
C.undiscovered dangers
D.the continental shelf
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
A.1 minute of longitude
B.1 degree of longitude
C.1 minute of latitude
D.1 degree of latitude
最新試題
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
Which information does the outer ring of a compass rose on a nautical chart provide（）.
The only cylindrical chart projection widely used for navigation is the （）.
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
Which chart symbol indicates the bottom is clay（）.
Charts showing the coast of Mexico are produced by the United States（）.
What information is found in the chart title? （）
Which information is found in the chart title（）.
The soundings on the chart are based on the depth of water available at （）.
The revision date of a chart is printed on which area of the chart? （）