单选题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（）.AOff centerBTrue motionCStabilizedDHead up
单选题
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（）.
A
Off center
B
True motion
C
Stabilized
D
Head up
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