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荷兰小画派

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You create a Web page named TestPage.aspx and a user control named contained in a file named TestUserControl.ascx.You need to dynamically add TestUserControl.ascx to TestPage.aspx. Which code segment should you use?()

A. protected void Page_Load(object sender, EventArgs e) { Control userControl=Page.LoadControl("TestUserControl.ascx"); Page.Form.Controls.Add(userControl); }
B. protected void Page_Load(object sender, EventArgs e) { Control userControl = Page.FindControl("TestUserControl.ascx"); Page.Form.Controls.Load(userControl); }
C. protected void Page_PreInit(object sender, EventArgs e) { Control userControl =Page.LoadControl("TestUserControl.ascx");Page.Form.Controls.Add(userControl); }
D. protected void Page_PreInit(object sender, EventArgs e) { Control userControl = Page.FindControl("TestUserControl.ascx"); Page.Form.Controls.Load(userControl); }

什么情况应重新绘制竣工图?

为确保锅炉水循环正常()。

A. 应对下降管适当加热
B. 下降管处水位高度要大于2倍管子内径
C. 下降管与上升管间距要近
D. 给不管应布置在下降管进口附近

什么叫发、变、配电所的负荷率?怎么样计算?

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