A.a plan-position indicator system
B.pulse-plan integration
C.pulse-pulse input
D.power-plan input
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A.one target
B.two targets
C.three targets
D.a large number of targets
A.EBL
B.VRM
C.CRT
D.target tracking range
A.EBL
B.VRM
C.CRT
D.Grease pencil
A.To receive the high-frequency pulses from the transmitter
B.To focus the pulses into a beam，and send them into space
C.To pick up reflected pulses coming from objects that have been struck by the beam
D.To reflect microwaves
A.Relative
B.TRUE
C.Compass
D.Magnetic
最新試題
The development of（）led to the fully automatic ARPA systems installed on commercial ships.
Your radar displays your ship off center．As you proceed on your course， your ship’s marker moves on the PPI scope while echoes from land masses remain stationary.What is this display called（）.
Which general statement concerning radar is FALSE?（）.
You are using a radar in which your own ship is shown at the center，and the heading flash always points to 0°. If bearings are measured in relation to the flash，what type of bearings are produced? （）
You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.
When using an ARPA，what should you consider in order to evaluate the information displayed?（）
Which procedure(s) shall be used to determine risk of collision? （）
（）is not a job of the radar antenna.
Which statement concerning the operation of radar in fog is TRUE?（）
Which condition indicates that your radar needs maintenance?（）