承担医疗器械经营质量的主要责任人是：（） ["企业法定代表人","企业负责人","质量负责人","企业法定代表人或者负责人"]
You are developing an ASP.NET MVC 2 application. A view contains a form that allows users to submit their first name. You need to display the value that is submitted， and you must ensure that your code avoids cross-site scripting. Which code segment should you use？（） ["<%: Model.FirstName %>","<%= Model.FirstName %> ","<% Response.Write(Model.FirstName) %> ","<% Response.Write(HttpUtility.HtmlDecode(Model.FirstName)) %>&e"]
碘缺乏的主要原因是（）。 ["母亲孕期没吃或吃含碘的食物少","长期不吃新鲜蔬菜、水果或高烧","长期腹泻","吃乳、蛋、肉少"]
You are creating a DataTable. You use the following code segment to create the DataTable. (Line numbers are included for reference only.) 01 Dim dt As New DataTable("Products") 02 dt.Columns.Add(New DataColumn("Price", _ GetType(Decimal))) 03 dt.Columns.Add(New DataColumn("Quantity", _ GetType(Int32))) 04 Dim dc As DataColumn = New DataColumn("Total", _ GetType(Decimal)) 05 dt.Columns.Add(dc) You need to ensure that the Total column is set to the value of the Price column multiplied by the Quantity column when new rows are added or changed. What should you do? （） [" Add the following code segment after line 05. dc.ExtendedProperties("Total") = "Price * Quantity""," Add the following code segment after line 05. dc.Expression = "Price * Quantity""," Write an event handler for the DataTable's TableNewRow event that updates the row's Total."," Write an event handler for the DataTable's ColumnChanged event that updates the row's Total."]
水泥细度试验筛修正系数为标准样在试验筛上的实测筛余百分率与标准样品给定的筛余百分率之比。
简述激励机制的设计。
