安全生产“三违”指什么？
You create a Web page that contains drop-down menus that are defined by using div tags in the following code. You need to write a JavaScript function that will enable the drop-down menus to activate when the user positions the mouse over the menu title. Which code segment should you use？（） ["$（".dropdown-menu"）.hover（ function （） { $（".menu-items"）.slideDown（100）； }，function （） { $（".menu-items"）.slideUp（100）； } ）；","$（".dropdown-menu"）.hover（ function （） { $（".menu-items"， this）.slideDown（100）； }，function （）{ $（".menu-items"， this）.slideUp（100）； } ）；","$（".dropdown-menu"）.hover（ function （） { $（this）".slideDown（100）； }， function （） { $（this）.slideUp（100）； } ）；","$（".dropdown-menu"）.hover（ function （） { $（"this.menu-title"，）.slideDown（100）； }，function （） {$（"this.menu-title"，）.slideUp（100）； } ）；"]
简述海运提单的性质和作用。
Your company has a main office and a branch office. The branch office has three servers that run a Server Core installation of Windows Server 2008. The servers are named Server1， Server2， and Server3. You want to configure the Event Logs subscription on Server1 to collect events from Server2 and Server3. You discover that you cannot create a subscription on Server1 from another computer. You need to configure a subscription on Server1.Which two actions should you perform？（） ["Run the wecutil cs subscription.xml command on Server1.","Run the wevtutil im subscription.xml command on Server1.","Create an event collector subscription configuration file. Name the file subscription.xml.","Create a custom view on Server1 by using Event Viewer. Export the custom view to a file named subscription.xml."]
下列哪一项不是安全目标管理所具有的主要特点？（） ["目的性","分权性","民主性","垄断性"]
简述结构化开发方法的主要阶段和各阶段产生的文档。
