A.high or low
B.AC or DC
C.strong or weak
D.on or off
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A.gyro-compass
B.marine radar
C.DF
D.navigational satellite
A.two stations，including one on the nearest coast
B.two stations，including one on the nearer coast
C.three stations，including one on the farthest coast
D.three stations，including one on the nearest coast
A.parallel bearings
B.long-range bearings
C.short-range bearings
D.cross bearings
A.their transmitters
B.their receivers
C.their radars
D.their lorans
A.if
B.how
C.when
D.where
最新試題
（）is not a component of GPS.
The heading of a vessel is indicated by what part of the compass? （）
To obtain accuracy in fixing by DF，（）and three stations should be used.
（）is not a factor which will affect the accuracy of GPS receiver.
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.
Which of the following statements is TRUE regarding crane operations（）.
Radar makes the most accurate determination of the（）.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
In using Loran-C，skywave reception gives greater range but is（）.
Which statement concerning GPS is TRUE（）.