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以下哪些表示统一资源定位器?()

A. 168.160.220.66
B. www.cctv.com
C. http://www.dlptt.ln.cn
D. fox@onlinln.c

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根据研究的性质,研究报告可以区分为()

A. 普通研究报告与学术性研究报告
B. 描述性研究报告与解释性研究报告
C. 定性研究报告和定量研究报告
D. 综合性研究报告和专题性研究报告

焊缝金属,开始结晶时并不形核,而是在母材基体上()长大。

A. 自发形核
B. 非自发形核
C. 联生结晶
D. 细化晶粒

An administrator is attempting to recover afilesystem that fails to manually unmount. The fsck command produces the following output: The current volume is: /dev/fslv02 File system is currently mounted. Invalid file system size in the primary superblock. Invalid file system size in the secondary superblock. Primary superblock is corrupt. Secondary superblock is corrupt. fsck: Cannot continue tried to mount Which steps will resolve the problem?()

A. Reboot the server into maintenance mode and run 'fsck' with the '-p' parameter while the filesystem is mounted
B. Reboot the server into maintenance mode and run 'fsck' with the '-y' parameter whilethe filesystem is unmounted
C. Force a umount of the filesystem with 'umount -F /dev/fslv02', and then run 'fsck p /dev/fslv02' while the file system is unmounted
D. Force a umount of the filesystem by varying off the hosting volume group and then varyon the volume group. This will permit 'fsck -y' to be run against the failing filesystem

城市规划中的公共利益的具体表现。

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