酒店是否对设备制定了结构化、条理化的预防性维护计划？预防性维护能够延长设备的使用寿命，延缓昂贵的替换成本的发生。

Does the hotel have astructured and organised preventative maintenance program on hotel equipment?Preventative Maintenance extends lifecycle and can delay expensive replacementcosts.

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使用维护既是保持飞机结构和恢复飞机结构完整性和高可靠性的重要措施，也是防止和延缓飞机结构腐蚀的重要途径。

Airplane maintenance is not only the important measure to keep and recover structural integrity and high reliability, but also approach to prevent and delay structural corrosion.

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