A.at close range
B.at end on situation
C.at head on situation
D.at crossing situation
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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
A.Magnetic compass table
B.Magnetic meridians
C.Isogonic lines
D.Variation is not indicated on small-scale nautical charts
A.accurate only in the Polar regions
B.accurate electronic servomechanisms
C.hand operated
D.accurate only if the vessel is underway
最新試題
Loran-C is which type of system（）.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
Which statement concerning GPS is TRUE（）.
Automatic identification systems（AIS）are required to（）.
What does not contribute to the commercial GPS receiver position error（）.
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
Would you mind（）your DF?
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
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.