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单选题
269、Utilizing an airplane as intended by the manufacturer,combined with sound inspection and maintenance practices , t forms the basis for assuring the airplane remains airworthy and safe to operate.
A
由制造商决定飞机的使用,结合良好的检查和维修实践,以构成飞机保持适航性和安全运行的基础。
B
按照制造商的计划要求使用飞机,结合例行检查和维护实践,从而构成飞机保持适航和安全运行的基础。
C
按照制造商的要求使用飞机,结合合理的检查和维修实践,形成了确保飞机保持适航和安全运行的基础。
答案解析
正确答案：C
解析：
解析:sound 良好的。assuring 弄清,确保
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