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单选题
A CAP supplements the airplane’s maintenance manual (or Instructions for Continuing Airworthiness) which is the primary document containing the procedures for the continuing airworthiness of the airplane.
A
A.CAP是对《飞机维护手册》（或《持续适航文件》）的补充，该手册是包含飞机持续适航程序的主要文件。
B
B.《飞机维护手册》（或《持续适航文件》）是针对飞机持续适航的主要文件，而CAP属于补充性文件。
C
C.CAP是对《飞机维护手册》（或持续适航文件》）的补充，是包含飞机持续适航程序的主要文件。
答案解析
正确答案：A
相关知识点：
CAP补充飞机维护手册口诀
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