A.detective Availability
B.local environmental conditions
C.autonomous mode versus differential correction mode versus RTCM mode
D.the averaging of recorded locations
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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
A.full confirmation
B.precise appreciation
C.immediate assessment
D.timely recognition
A.direction of a target
B.distance to a target
C.size of a target
D.shape of a target
最新試題
Loran-C is which type of system（）.
The information received by AIS will be displayed on（）.
（）is not a factor which will affect the accuracy of GPS receiver.
The line connecting the Loran-C master station with a secondary station is called the（）.
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
In using Loran-C，skywave reception gives greater range but is（）.
Radar makes the most accurate determination of the（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
The loran lines drawn on navigation charts represent（）.