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單項(xiàng)選擇題

PPI is（）.

A.a plan-position indicator system
B.pulse-plan integration
C.pulse-pulse input
D.power-plan input

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單項(xiàng)選擇題

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

單項(xiàng)選擇題

（）typically extends from close as 0.1 nautical miles out to 32 NM.

A.EBL
B.VRM
C.CRT
D.target tracking range