单项选择题
At sea，we can use（）to fix the ship’s position.
A.VHF
B.Steering Gear
C.Rudder Indicator
D.Loran
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相关考题
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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 -
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 -
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
