每架飞机起飞前必须经过严格的检查。 Translation: Every plane must check out strictly before taking off.（）

scribe the interaction between the actor and the system, but not the internal activity of the system._____描述了要构建的软件的功能，其核心是描述参与者和系统之间的交互，而不是系统的内部活动A．Use case diagramB．Class diagramC．Collaboration diagramD．State diagram