Malaysian Prime Minister announced on Monday that the missing Malaysia Airlines MH370 ended in the Southern Indian Ocean, but many said it lacked _____ evidence.

A．fierce

B．severe

C．solid

D．potential

在二级耐火等级的、多层民用建筑中，面积不超过100m²的房间隔墙，可采用耐火极限不低于0.3h的（）。

A、不燃烧体

B、难燃烧体

C、可燃烧体

D、易燃烧体