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
The survey information upon which a chart is based is found （）.
The soundings on the chart are based on the depth of water available at （）.
Which chart symbol indicates the bottom is clay（）.
Particular care is needed when navigating in the vicinity of（）as very few of these features have been fully surveyed to modern standards to determine their correct position，full extent，or the least depth over them.
Which information does the outer ring of a compass rose on a nautical chart provide（）.
What defines a great circle? （）
The arrangement of charts in the catalogue is（）.
（）is not a position-fixing system.
The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.