A.Latitude
B.Longitude
C.Speed
D.Time
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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
A.Rhythm
B.Period
C.Intensity
D.Color
最新試題
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（）.
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.
Automatic identification systems（AIS）are required to（）.
The information received by AIS will be displayed on（）.
The loran lines drawn on navigation charts represent（）.
The line connecting the Loran-C master station with a secondary station is called the（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.