The standard form of official support for Categary 1 aircraft shall be pure cover
问题描述：
The standard form of official support for Categary 1 aircraft shall be pure cover
这句话怎么翻译?特别是 pure cover
答
标准的官方支持形式范畴是对飞机的纯保险.、
pure cover是纯保险的意思.