下列设备中不能作为输出设备的是( )。
A．显示器
B．打印机
C．键盘
D．中央处理器
参考答案：C
Although ____, the Acropolis is still handling serious problems such as deliberate damage and stealing of
stones. [ ]
A. conserving
B. to be conserved
C. having conserved
D. being conserved
核心竞争力丧失的原因是什么？
