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【单选题】
包含飞机持续适航程序的主要文件是飞机的维修手册
A.
The secondary document containing the continued airworthiness procedure of an airplane s the air plane 's maintenance manual
B.
The main document containing the procedures for the continued airworthiness of an airplane is the airplane' s overhaul manual.
C.
The primary document containing the procedures for the continued airworthiness of an airplane is the airplane 's maintenance manual
参考答案：
参考解析：
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举一反三
【单选题】如图所示，船舶沿ADB航行要比沿直线ACBC B C B 航行增加航程（）。
A.
1.5nmile以下
B.
1.5～3.0nmile
C.
3.0～5.0nmile
D.
5.0nmile以上