A.Parallel bearings
B.Long-range bearings
C.Short-range bearings
D.Cross bearings
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A.High frequency pulses
B.Combinations of high and low frequency pulses
C.The same frequency for all stations in a chain
D.Varied long and short pulses
A.An atomic time standard
B.Daylight Savings Time
C.Eastern Standard Time
D.Greenwich Mean Time
A.one
B.two
C.three
D.four
A.Mate's license
B.Restricted radiotelephone operator permit
C.Second-class radio operator's license
D.Seaman's document
A.Navigational satellites
B.Loran
C.Omega
D.Any of the above
最新試題
（）is not a component of GPS.
（）is not a factor which will affect the accuracy of GPS receiver.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
While you are at anchor，what will serve as a positive warning that you are drifting towards the wrecks located to the NW and SW of your 2215 position（）.
The heading of a vessel is indicated by what part of the compass? （）
Which one of the followings does not limit the effective range of radar（）.
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（）.
Loran-C uses the multiple pulse system because（）.