A.Similize
B.Clock
C.Synchronize
D.Position
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A.east two degrees
B.two degrees east
C.two east degrees
D.two-degrees east
A.reflect
B.shown
C.detected
D.defected
A.A vessel on the starboard bow whose bearing is changing and range is decreasing
B.A vessel on the starboard bow whose bearing is steady and range is increasing
C.A vessel on the port bow whose bearing is steady and range is decreasing
D.A vessel on the port bow whose bearing is changing to the left and range decreasing
最新試題
An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes?（）.
The minimum range at which a target can be detected is basically determined by which of the following?（）.
Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.
What will NOT induce errors into a doppler sonar log?（）
A Doppler speed log indicates speed over ground（）.
Compass deviation is caused by（）.
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
Deviation is the angle between the（）.
A Doppler log in the volume reverberation mode indicates（）.
The number of pulses of energy transmitted per second is call the（）.