单项选择题
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
A.one target
B.two targets
C.three targets
D.a large number of targets
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相关考题
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单项选择题
（）typically extends from close as 0.1 nautical miles out to 32 NM.
A.EBL
B.VRM
C.CRT
D.target tracking range -
单项选择题
（）is not used in modern radar.
A.EBL
B.VRM
C.CRT
D.Grease pencil -
单项选择题
（）is not a job of the radar antenna.
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
