题目内容

矸石段人工床层的厚度为(),中煤段为()。

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在Word中,在进行文档的录入时,发现有一段落误录入,现在要一次性把其删除并不加入其他内容,在选定该段落情况下,哪一项操作不能进行删除()

A. 按Delete键
B. 按Tab键
C. 按Backspace键
D. “编辑”菜单中的“清除”命令

语言理解

电焊机二次线长度不应超过(),必须采用防水橡皮护套铜芯电缆。

A. 5m
B. 10m
C. 20m
D. 30m

How are IP multicast IGMP entries synchronized between vPC peers?()

A. IGMP is not synchronized between vPC peers
B. Cisco Fabric Service carries IGMP entries across the vPC peer link
C. IP ARP synchronization under the vPC domain configuration also synchronizes IGMP
D. IGMP is flooded to the L2 domain, and there is no need to synchronize it between vPC peer

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