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单选题
Note that alterations or repairs to airplane must be accomplished by licensed personnel.
A
Only the certified personnel can complete the modification or repair to the aircraft.
B
Pay attention that inspections or maintenance work ought to be carried out by mechanics.
C
Modifications or repairs to aircraft should be achieved by releasing staff.
答案解析
正确答案：A
相关知识点：
飞机改修须持照人员完成
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