A.carrier frequency
B.pulse repetition rate
C.pulse length
D.pulse repetition time
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A.magnetron
B.receiver
C.indicator
D.modulator
A.transmitter
B.antenna system
C.indicator
D.modulator
A.persistence
B.pulse repetition rate
C.pulse length
D.resolution
A.Relative
B.TRUE
C.Compass
D.Magnetic
A.magnetism from the earth's magnetic field
B.misalignment of the compass
C.magnetism within the vessel
D.a dirty compass housing
最新試題
A radar display in which North is always at the top of the screen is a(n)（）.
（）should be used during the poor visibility if the radar’s screen shows heavy sea returns.
An ECDIS is required to display which information?（）
Error may be introduced into a magnetic compass by（）.
The radar component that generates the radio-frequency energy in the form of short powerful pulses 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)（）.
AREAS WHICH CANNOT BE SCANNED BY THE RADAR OF THE VESSEL BECAUSE THEY ARE SHIELDED BY PARTS OF ITS SUPERSTRUCTURE，MASTS，ETC means（）.
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 tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
Compass error is equal to the（）.