简述杜威的问题解决五步模式。
查看软件版本等相关信息，应从以下哪里选择（） 帮助/关于CorelDRAW。 文件/文档信息。 文件/关于CorelDRAW。 窗口/工具栏。
城镇土地使用税
当采用（）钢筒式压路机时，总质量不小于12t，相邻碾压带不应小于200mm。 A.双轮 。 B.四轮 。 C.三轮 。 D.多轮。
You are the network administrator for TestKing. Your network consists of a single Active Directory domain named All network servers run Windows Server 2003, and all 200 client computers run Windows XP Professional. Software Update Services (SUS) is installed with default settings on a server named TestKing5. You discover that a critical security update for Internet Explorer is not installed on any client computer. You verify that the update was downloaded from the Internet to TestKing5. You also verify that more recent security updates are installed. You need to investigate the cause of this problem. You will use the SUS administration console on TestKing5. Which data should you evaluate? （）(Choose two) The security update in the synchronization log.。 The security update in the approval log.。 The status of Internet Explorer 5.5x in the Monitor Server window.。 The status of Internet Explorer 6.x in the Monitor Server window.。
马克思主义政治经济学是研究：（）
