A.brightness of objects
B.color of targets
C.shape of targets
D.bearing of objects
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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
A.hard iron
B.soft iron
C.vertical iron only
D.horizontal iron only
最新試題
In using Loran-C，skywave reception gives greater range but is（）.
The operator of the ship’s radiotelephone，if the radiotelephone is carried voluntarily，must hold at least a（）.
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
Loran-C is which type of system（）.
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.
The loran lines drawn on navigation charts represent（）.
Radar makes the most accurate determination of the（）.
The（）transmits own ship data cyclically via two defined VHF channels and receives the same data of the other ships and objects that are equipped with AIS systems.
The line connecting the Loran-C master station with a secondary station is called the（）.
Which statement concerning GPS is TRUE（）.