题目内容
纳税人购进免税农产品，允许从销项税额中按照买价()的扣除率抵扣进项税额。
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You are the network administrator for your company. The network consists of a single Active Directory domain. The domain contains 25 Windows Server 2003 computers and 6，000 Windows XP Professional computers.The written company security policy states that network traffic to Web servers must be audited on a regular basis. A server named Server1 is configured as a Web server on the company’s intranet. You install Network Monitor Tools from a Windows Server 2003 product CD-ROM on Server1.You run Network Monitor on Server1 for three hours. When you stop the network capture， you see that Network Monitor captured over 40，000 frames. As you look at the captured frames， you notice that an extremely large number of TCP connection requests have all come from the 131.107.0.1 IP address.In Network Monitor， you need to view only the frames for network traffic that are captured between Server1 and the 131.107.0.1 IP address. What should you do？（）
简述自我管理的内涵。
室外楼梯作为疏散楼梯时，倾斜角度不应大于（）
起重用缓冲器分为橡胶缓冲器，弹簧缓冲器，（）缓冲器。
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