A.direction of a target
B.distance to a target
C.size of a target
D.shape of a target
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A.brightness of objects
B.color of targets
C.shape of targets
D.bearing of objects
A.Latitude
B.Longitude
C.Speed
D.Time
A.deviation
B.variation
C.local attraction
D.All of the above
A.at close range
B.at end on situation
C.at head on situation
D.at crossing situation
A.to get
B.to approach
C.to proceed
D.to close
最新試題
You are about to go to sea and adjust the magnetic compass．To expedite the adjustment at sea，in what order should the following dockside adjustments be made（）.
Loran-C uses the multiple pulse system because（）.
Radar makes the most accurate determination of the（）.
What does not contribute to the commercial GPS receiver position error（）.
Automatic identification systems（AIS）are required to（）.
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.
（）is a digitized“picture”of a chart.
While you are at anchor，what will serve as a positive warning that you are drifting towards the wrecks located to the NW and SW of your 2215 position（）.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
When your vessel is proceeding to the area of traffic density，（）is used to determine the exact ranges of other ships or objects in the vicinity.