单选题In radar plotting C.P.A.is the abbreviation of（）.Aclosest point to approachBclose point to approachCcrossing point to approchDcoming point to approach
单选题
In radar plotting C.P.A.is the abbreviation of（）.
A
closest point to approach
B
close point to approach
C
crossing point to approch
D
coming point to approach
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