[单选] 下列成土母质中属于残积母质的是（）。

下面那个代码段正确的增加了一个TextBox控件到一个名为form1的Web窗体上？（） TextBox c = new TextBox(); c.ID = "txtUserName"; c.Visible = true;。 TextBox c = new TextBox(); c.ID = "txtUserName"; c.Visible = true; c.Controls.Add(form1);。 TextBox c = new TextBox(); c.ID = "txtUserName"; c.Visible = true; c.Add(form1);。 TextBox c = new TextBox(); c.ID = "txtUserName"; c.Visible = true; form1.Controls.Add(c)。 下列单据中，只有（）才可用来结汇。 装货单。 铁路运单正本。 收货单。 铁路运单副本。 Your network contains an Active Directory domain. The domain contains a Windows Server Update Services (WSUS) server named Server1. A Group Policy object (GPO) named GPO1 configures all computers in the domain to use Server1 for Windows Update.You add a new Windows 7 computer named Computer1 to the domain.From the Update Services console, you discover that Computer1 is not listed as a member of any computer groups.You verify that GPO1 is applied to Computer1.You need to ensure that Computer1 is available in the Update Services console. What should you do？（） On Computer1, run wuauclt.exe /detectnow.。 On Computer1, run wuauclt.exe /reportnow.。 On Server1, run wsusutil.exe reset.。 On Server1, run wsusutil.exe listinactiveapprovals.。 下列不属于巴比塞作品的是（） 《泣妇》。 《哀求者》。 《地狱》。 《诸神渴了》。 Your network contains an Active Directory domain named contoso.com. All domain controllers run Windows Server 2008 R2. The functional level of the domain is Windows Server 2008 R2. The functional  level of the forest is Windows Server 2008.   You have a member server named Server1 that runs Windows Server 2008.   You need to ensure that you can add Server1 to contoso.com as a domain controller.   What should you run before you promote Server1（） dcpromo.exe /CreateDCAccount。 dcpromo.exe /ReplicaOrNewDomain：replica。 Set-ADDomainMode -Identity contoso.com -DomainMode Windows2008Domain。 Set-ADForestMode -Identity contoso.com -ForestMode Windows2008R2Forest。 下列成土母质中属于残积母质的是（）。