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
Which of the following statements is TRUE regarding crane operations（）.
（）is not a component of GPS.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
Would you mind（）your DF?
In using Loran-C，skywave reception gives greater range but is（）.
Radar makes the most accurate determination of the（）.
（）is a digitized“picture”of a chart.
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.
If the radio signal ground wave extends out for less distance than the minimum skywave distance，there is an area in which no signal is received．This is called the（）.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．