utilizing an airplane as intended by the manufacturer, combined with sound inspection and maintenance practices , forms the basis for assuring the airplane remains airworthy and safe to operate.根据制造商的意 图使用飞机，结合良好的检查和维护实践，形成了确保飞机保持适航性和安全操作的基础。
A.The airworthiness and safe operation of an airplane is assured if it's used as its original design purpose, properly inspected and carefully maintained. B.The manufacturer is intended to utilize an airplane with sound inspection and maintenance practices because that is the basis for assuring the airplane remains airworthy and safe to operate. C.The airplane is designed to be used as the manufacture's intention. Users shall properly inspect the airplane and do sufficient maintenance to assure its airworthiness and operation safety.正确答案C
