立即激活有（）和（）两种激活方式。
参考答案：自动激活；手动激活
When the man came in, gun in hand, we all stood there, ______. [ ]
A. frightened
B. frightening
C. being frightened
D. having frightened
为固定资产发生的大修理费用应在发生时一次计入当期损益。( )
