单项选择题
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 system of reservoirs and connecting tubes in a gyro c...
单项选择题A system of reservoirs and connecting tubes in a gyro compass is called a（）.
A.spider element B.mercury ballistic C.gyrotron D.rotor
A single vertical magnet placed underneath the compass ...
单项选择题A single vertical magnet placed underneath the compass in the binnacle is used to compensate for（）.
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 compass card without north-seeking capability that is...
单项选择题A compass card without north-seeking capability that is used for relative bearings is a(n)（）.
A.bearing circle B.pelorus C.bearing bar D.alidade
