YDC1500N―100型内卡式千斤顶的公称油压为()MPa。
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在实际工作中坚持马克思主义认识论的基本原理,就是要坚持()
A. 经济基础和上层建筑辩证关系的理论
B. 一切从实际出发,在实践中坚持和发展真理
C. 阶级和阶级斗争的理论
D. 社会存在决定社会意识的理论
根据GB5725-2009《安全网》3.1中定义,按照安全网的功能可分为()。
A. 安全平网
B. 安全立网
C. 密目式安全平网
D. 密目式安全立网
You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create a page that contains the following code fragment. English Chinese Japan Korean - 92 - Test Information Co., Ltd. All rights reserved. You write the following code segment in the code-behind file for the page. void BindData(object sender, EventArgs e) { lstLanguages.DataSource = CultureInfo.GetCultures(CultureTypes.AllCultures); lstLanguages.DataTextField = "EnglishName"; lstLanguages.DataBind(); } You need to ensure that the lstLanguages ListBox control maintains the selection of the user during postback. Which line of code should you insert in the constructor of the page?()
A. this.Init += new EventHandler(BindData);
B. this.PreRender += new EventHandler(BindData);
C. lstLanguages.PreRender += new EventHandler(BindData);
D. lstLanguages.SelectedIndexChanged += new EventHandler(BindData);&e