（ ）is not included in the main contents of the operation and maintenance of the information system.A.Daily operation and maintenanceB.System changeC.Security managementD.Business change
（ ）is not included in the main contents of the operation and maintenance of the information system.
A.Daily operation and maintenance
B.System change
C.Security management
D.Business change
B.System change
C.Security management
D.Business change
参考解析
解析：翻译：业务变更不属于信息系统的操作和维护的主要内容。A．日常操作维护 B．系统变更 C．安全管理 D．业务变更
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