简述早期管理理论的主要内容？
You create a Windows client application by using Windows Presentation Foundation (WPF). The application contains the following code fragment. You need to assign lbDetails to use the detail data template when btnDetails is clicked. Which code segment should you write for the click event handler for btnDetails?（） [" lbDetails.ItemsPanel.FindName("detail",lbDetails);"," var tmpl = (ControlTemplate)FindResource("detail"); lbDetails.Template = tmpl;"," var tmpl = (DataTemplate)FindName("detail"); lbDetails.ItemTemplate = tmpl;"," var tmpl = (DataTemplate)FindResource("detail"); lbDetails.ItemTemplate=tmpl"]
柴油发动机燃油系统喷油嘴的作用是将燃油以何种形式喷人气缸（）。 ["水柱状","条状","雾状","水滴状"]
硬母线水平排列的允许载流量比竖直排列时安（）。 ["大","小","一样","略大"]
You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application uses Session objects. You are modifying the application to run on a Web farm. You need to ensure that the application can access the Session objects from all the servers in the Web farm. You also need to ensure that when any server in the Web farm restarts or stops responding， the Session objects are not lost. What should you do？（） ["A","B","C","D"]
何谓酶定向进化？有何特点？
