单选题When carrying out a parallel track search pattern，the course of the search units should normally be which of the following（）.AIn the same direction as the anticipated driftBIn the opposite direction of the anticipated driftCPerpendicular to the line of anticipated driftDDownwind
单选题
When carrying out a parallel track search pattern，the course of the search units should normally be which of the following（）.
A
In the same direction as the anticipated drift
B
In the opposite direction of the anticipated drift
C
Perpendicular to the line of anticipated drift
D
Downwind
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