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简述直埋蒸汽管道暖管时蒸汽压力提升步骤?

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IPv6中IP地址的长度为128位。

A. 正确
B. 错误

简述七情内伤。

紧固填料压盖螺钉压紧填料,减少滴漏量,属于保养中的调整项目()

A. 正确
B. 错误

How can you reverse the effects of an ALTER DISKGROUP ... DROP DISK command if it has already completed?()

A. Issue the ALTER DISKGROU.. ADD DISK command.
B. Issue the ALTER DISKGROU.. UNDROP DISKS command.... DROP DISK CANCEL command.
C. Issue the ALTER DISKGROU
D. Retrieve the disk from the Recycle Bin after the operation completes.

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