Habit such as _______ is bad for our health.

A．eating too much junk food

B．drinking much too coffee

C．playing basketball

D．stay up late

当发生故障时，根据现场数据内容、检查点文件的故障前映像和( )来恢复系统的状态。

A．库文件

B．转储文件

C．日志文件

D．后备文件