A.VHF
B.Steering Gear
C.Rudder Indicator
D.Loran
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A.make
B.be made
C.not make
D.not be made
A.remains aligned with compass north
B.also turns to starboard
C.first turns to starboard then counterclockwise to port
D.turns counterclockwise to port
A.spider element
B.mercury ballistic
C.gyrotron
D.rotor
A.the horizontal component of the permanent magnetism
B.deviation caused by the vessel's inclination from the vertical
C.induced magnetism in the horizontal soft iron
D.induced magnetism in the vertical soft iron
A.bearing circle
B.pelorus
C.bearing bar
D.alidade
最新試題
Loran-C is which type of system（）.
（）is a digitized“picture”of a chart.
The operation of which aids to navigation may be suspended during war or national emergency（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
Would you please（）on the radar?
The heading of a vessel is indicated by what part of the compass? （）
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
Automatic identification systems（AIS）are required to（）.
（）is not an alarm required by IMO standards to be available on the ECDIS.
Radar makes the most accurate determination of the（）.