A.Card
B.Needle
C.Lubber's line
D.Gimbals
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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
A.brightness of objects
B.color of targets
C.shape of targets
D.bearing of objects
A.Latitude
B.Longitude
C.Speed
D.Time
最新試題
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
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.
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
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.
Would you mind（）your DF?
Loran-C is which type of system（）.