题目内容

恒电位仪校正零位时，应首先将仪器下层的万能开关拨至（）挡，这时上层指示灯亮。测量电位表指示为零。同时机内以发出报警声。

A. 停止
B. 校正
C. 准备
D. 关闭

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Your network contains one Active Directory domain. You have a member server that runs Windows Server 2008 R2.You need to immediately disable all incoming connections to the server. What should you do？（）

A. From the Services snap-in, disable the IP Helper.
B. From the Services snap-in, disable the Netlogon service.
C. From Windows Firewall, enable the Block all connections option on the Public Profile.
D. From Windows Firewall, enable the Block all connections option on the Domain Profile.

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