适航部分必须规定每个强制更换时间
A.The airworthiness section may recommend each expected replacement time. B.The replacement time must be set forth in part of airworthiness section C.Airworthiness section must set forth each mandatory replacement time.正确答案C
适航部分必须规定每个强制更换时间
A.The airworthiness section may recommend each expected replacement time. B.The replacement time must be set forth in part of airworthiness section C.Airworthiness section must set forth each mandatory replacement time.正确答案C
