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
Radar makes the most accurate determination of the（）.
The information received by AIS will be displayed on（）.
To obtain accuracy in fixing by DF，（）and three stations should be used.
The loran lines drawn on navigation charts represent（）.
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（）.
Which one of the followings does not limit the effective range of radar（）.
Would you please（）on the radar?
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
Loran-C is which type of system（）.