单项选择题
A.VHF B.Steering Gear C.Rudder Indicator D.Loran
Assumption shall（）on the basis of scanty information es...
单项选择题Assumption shall（）on the basis of scanty information especially scanty radar information.
A.make B.be made C.not make D.not be made
As a vessel changes course to starboard，the compass car...
单项选择题As a vessel changes course to starboard，the compass card in a magnetic compass（）.
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
