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18.View the Exhibit and identify the component marked with a question mark.


A.Checkpoint (CKPT)
B.Process Monitor (PMON)
C.Archiver Processes (ARCn)
D.Recoverer Process (RECO)
E.Memory Manager process (MMAN)
答案:A
解析:从图中可以看出该进程可以操作控制文件和数据文件,因此是CKPT

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