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单选题
要指出的是，在对飞机进行任何改装之前，都应该先与联邦航空局联系，以确保飞机的适航性不受影响。
A
Point out that the FAA should be contacted prior to any alterations on airplane to ensure that the airworthiness of the airplane is not violated.
B
Point out that the FAA should be informed after any modifications on airplane to ensure that the airworthiness of the airplane is not effected .
C
Point out that any modifications on airplane may be informed to FAA to confirm the airworthiness of the airplane.
答案解析
正确答案：A
相关知识点：
飞机改装前联系FAA要记清
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