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四极急而动中

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含碳量小于2%的称为铁。

A. 正确
B. 错误

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计算机安全保密技术包括（）。

A. 病毒防治
B. 鉴别技术
C. 介质的安全管理技术
D. 访问控制
E. 数据库安全
F. 网络安全

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关键性害虫占植食性昆虫种类的（）。

A. 1%——2%
B. 3%——4%
C. 4%——5%
D. 6%——7%

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You are a network administrator for your company. All servers run Windows Server 2003. A network server named Server1 functions as the main file server. Server1 is backed up each night by using the Backup utility. You perform a test restoration of Server1 by using the Backup utility. You discover that files that are open during the backup process are not being backed up. You need to ensure that open files are backed up successfully. What should you do? （）

A. Enable volume shadow copies on the partitions that are being backed up.
B. Disable volume shadow copies on the partitions that are being backed up.
C. Select the Verify data after backup check box in the Advanced backup options of the backup job.
D. Clear the Disable volume shadow copy check box in the Advanced backup options of the backup job.

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