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单选题
556.Pressing the ALIGN IRS Line Select Key on INIT page A:
A
Speeds up the alignment process of the three Inertial Reference Systems.
B
Initializes the alignment process of the three Inertial Reference Systems.
C
Completes the alignment process of the three Intertial Reference Systems using the coordinates of the origin airport.
答案解析
正确答案：C
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