--- It was said that little Bill hit his classmate on the head.

---He is thought to be a(an )________  boy, who is always ready to start a fight.

A．ashamed

B．awkward

C．desperate

D．aggressive

无固定冷却系统的液化石油气储罐发生火灾，冷却用水量包括（）之和。

A、冷却用水储备量

B、着火罐冷却用水量

C、配制泡沫的灭火用水量

D、邻近罐冷却用水量

E、固定系统冷却用水量