对于不同小区定向天线间水平20mm已经满足隔离要求，而且与天线3dB宽无关。
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A corrupted file system is now repaired and back in use. Some， but not all of the files within the file systems have been deleted. The only backup of this file system is a month-old tar archive. This archive will need to be restored as root. Which two statements correctly describe the effects of the restore operation？（）
A. Files found in the file system that are also on tape will NOT be overwritten.
B. The missing files， present on the backup tape， are restored to the file system with the data as it was when the backup was taken.
C. The access times are preserved by tar and will reflect the time when a user last accessed the data.
D. The modification time on the files restored by tar will be preserved and will reflect the time the file was last modified before the backup， NOT the time of the restore operation.
开发研究，又称发展研究，是指运用基础研究和应用研究的成果，为解决教育改革和发展重的问题而创造性地提出或制订可操作的方案、计划、对策及建议等。（）
A. 正确
B. 错误
中央与地方财政职能，一般划分为（）。
A. 领导和管理职能、稳定和发展经济职能、资源禀赋分配职能
B. 公平分配职能、协调经济职能、资源禀赋配置职能
C. 领导和.管理职能、协调经济职能飞进行资源配置职能
D. 公平分配职能、稳定和发展经济职能、进行资源配置职能
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