当系统发生故障后,启用后备数据,根据处理记录将数据恢复到故障前状态的技术称为()。
A.设备冗余技术
B.负荷分布技术
C.系统重新组合技术
D.自动备份技术
参考答案:C
They've won their last three matches, _____ I find a bit surprising. [ ]
A. that
B. when
C. what
D. which
空气泡沫调驱的优缺点?