灾难备份是灾难恢复的基础，是围绕着灾难恢复所进行的各类备份工作。灾难恢复不仅包含灾难备份，更注重的是业务的恢复。()
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要推动资源向优质企业和产品集中，推动创新要素自由流动和聚集。()
Almost every family buys as least one copy of a newspaper every day. Some people subscribe
A. go to the newspaper stand and buy
B. send their own news stories to
C. agree to buy for a specific period of time
D. become faithful readers of
当扣件夹紧钢管时,开口处的最小距离小于()㎜。
A. 3
B. 5
C. 7
社会冲突是基于不同的身份、利益、价值、信仰和规范，在个人或群体之间发生的对抗性的社会互动过程。()
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