单项选择题
A.阳光雨露 B.联想 C.神州数码 D.EMC
A.Retransmission Time-Out B.Recovery Time Objective C.Recovery Point Objective D.Railway Transportation Office
A.RoyalPhilharmonicOrchestra B.RecoveryPointObjective C.RailwayPostOffice D.RecoveryTimeObjective
A.同步镜像 B.A和B都对 C.异步镜像
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