色彩三要素是（）、（）、（）。
室外氢气管道应于防雷接地装置相连，接地电阻不应大于（）欧姆。 30。 20。 40。
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You create a custom control named Wheel. You need to ensure that the Speed property of Wheel can be animated. What should you do?（） Inherit the DependencyObject class.。 Declare the Speed property as a dependency property.。 Declare an animation of the Speed property from within the code-behind file.。 Implement the System.Windows.Media.Animation.IAnimatable interface with the Wheel class.。
点位图：可以逼真表现自然界的（），由许多的像素点组成，但数据量相对较大，在放大、缩小或旋转时（）产生失真。
You have an Exchange Server 2010 Hub Transport server named Hub1. You install an application on a third-party server named Server1. You discover that the application cannot authenticate to remote servers. You need to ensure that the application can relay e-mail messages by using Hub1. What should you do？（） .Create a new Send connector.Add the TCP/IP address of Server1 to the Send connector .Modify the permissions for the Send connector。 .Create a new Receive connector.Add the TCP/IP address of Server1 to the Receive connector .Modify the permissions for the Receive connector。 .Add the TCP/IP address of Server1 to the default Receive connector .Create a message classification.Create a transport rule。 .Add the TCP/IP address of Server1 to the Client Receive connector.Create a remote domain.Create a transport rule。
Your network contains an Active Directory domain controller named DC1. DDC1 runs Windows Server 2008 R2.
You need to defragment the Active Directory database on DC1. The solution must minimize downtime on DC1.
What should you do first（）
