A.Increased draft
B.Pitch
C.Roll
D.Change in trim
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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
A.carrier frequency
B.pulse repetition rate
C.pulse length
D.pulse repetition time
A.magnetron
B.receiver
C.indicator
D.modulator
A.transmitter
B.antenna system
C.indicator
D.modulator
最新試題
（）is on the panel of radar.
A Doppler speed log indicates speed over ground（）.
What will NOT induce errors into a doppler sonar log?（）
The microsecond unit of time is used in radar applications. The microsecond represents which of the following?（）.
An electronic depth finder operates on the principle that（）.
A FICTIVE LINE DISPLAYED ON THE RADAR SCREEN SEPARATING THE FAIRWAY FOR INBOUND AND OUTBOUND VESSELS SO THAT THEY CAN SAFELY PASS EACH OTHER defines（）.
A Doppler log in the bottom return mode indicates the（）.
A barometer showing falling pressure indicates the approach of a（）.
The number of pulses of energy transmitted per second is call the（）.
AREAS WHICH CANNOT BE SCANNED BY THE RADAR OF THE VESSEL BECAUSE THEY ARE SHIELDED BY PARTS OF ITS SUPERSTRUCTURE，MASTS，ETC means（）.