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第1题

A characteristic of operating system is _________ . A.resource management B.memory management C.error recovery D.all
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第2题

________ is designed to manage large bodies of information. A.a file system B.a transaction C.a database system D.a
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第3题

Please find the item that is not belong to the DBA _________ . ( ) A.storage structure and access method definition B.
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第4题

When power is removed, information in the semiconductor memory is ________ . A.reliable B.lost C.manipulated D.remai
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