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
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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
A.RINGS INT
B.SWEEP INT
C.REPEATER
D.GONIOMETER
A.in high latitudes
B.near the equator
C.on north or south headings
D.on intercardinal headings
最新試題
（）is not a component of GPS.
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.
Which statement concerning GPS is TRUE（）.
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.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
Radar makes the most accurate determination of the（）.
（）is not a factor which will affect the accuracy of GPS receiver.
The line connecting the Loran-C master station with a secondary station is called the（）.
Loran-C uses the multiple pulse system because（）.
Loran-C is which type of system（）.