A.He space component
B.Control component
C.User component
D.Alarming component
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A.Deviating from a planned route
B.Approach to waypoints and other critical points
C.Light house detecting
D.Larger scale chart available
A.detective Availability
B.local environmental conditions
C.autonomous mode versus differential correction mode versus RTCM mode
D.the averaging of recorded locations
A.Vector chart format
B.Raster chart data
C.pixel
D.Electronic Nautical Chart
A.Card
B.Needle
C.Lubber's line
D.Gimbals
A.on loran charts covering areas where sky waves are used
B.in the Radio Aids to Navigation，PUB 117
C.in the Loran-C Correction Tables
D.Sky waves cannot be matched to ground waves in LORAN-C to produce a usable reading
最新試題
（）is not a factor which will affect the accuracy of GPS receiver.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
Radar makes the most accurate determination of the（）.
Would you please（）on the radar?
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（）.
Which one of the followings does not limit the effective range of radar（）.
In using Loran-C，skywave reception gives greater range but is（）.
To obtain accuracy in fixing by DF，（）and three stations should be used.
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.
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.