单项选择题
Which of the following choices identifies a database component that will be used for multiplexing control files?（）
A.V$CONTROLFILE
B.V$DATABASE
C.init.ora
D.DBA FILES
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TheuseristryingtoexecuteaSELECTstatement.Whichofthefollowingbackgroundprocesseswillobtaindatafromadiskfortheuser?（）
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