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怎样靠手感去选择砚石？

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转化炉的炉膛负压对排烟温度的影响（）

A. 没有影响
B. 负压大，相对排烟温度高
C. 负压大，相对排烟温度低

You are the administrator of an Active Directory domain. All servers run Windows Server 2003. All client computers run Windows XP Professional. A server named Filesrv1 contains confidential data that is only available to users in the human resources （HR） department. You want all computers in the HR department to connect to Filesrv1 by using an IPSec policy. You assign the Server （Request Security） IPSec policy to Filesrv1. Using Network Monitor， you notice that some computers in the HR department connect to Filesrv1 without using the IPSec policy. You need to configure Filesrv1 to ensure that all computers connect to it by using the IPSec policy. What should you do？（）

Assign the Secure Server（Require Security） IPSec policy.
B. Assign the Client （Respond Only)IPSec policy.
C. Unassign the Server（Request Security IPSec policy.
D. Restart the IPSec Services service.

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（）产品是指购买供进一步加工或用于从事商务活动。

A. 找上门来
B. 专业
C. 购物
D. 工业
E. 方便

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某患者，髋关节置换术后一周，突发气促、血压下降，双肺听诊无明显异常，首先考虑是（）

A. 急性心肌梗死
B. 急性肺栓塞
C. 急性大量失血
D. 脂肪栓塞
E. 哮喘发作

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