A.Gain Control
B.Brilliant Control
C.Anti-clutter Sea Control
D.Sweep Intercept
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A.KEYLOCK
B.REPEATER
C.STATIC INVERTER
D.ANTI-CLUTTER-SEA
A.As many as
B.So many as
C.As much as
D.As more as
A.Increased draft
B.Pitch
C.Roll
D.Change in trim
A.one-millionth part of a second
B.one-thousandth part of a second
C.one-hundredth part of a second
D.one-tenth part of a second
A.persistence
B.pulse repetition rate
C.pulse length
D.rotation rate
最新試題
An ECDIS is required to display which information?（）
The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
The radar component that generates the radio-frequency energy in the form of short powerful pulses is which of the following?（）.
A Doppler log in the volume reverberation mode indicates（）.
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 radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.
A radar display which is oriented，so that north is always at the top of the screen，is called a(n)（）.
What will NOT induce errors into a doppler sonar log?（）
How is variation indicated on a small-scale nautical chart?（）.
A Doppler speed log indicates speed over ground（）.