试题详情
- 单项选择题You are developing an ASP.NET Web application. You create a master page. The master page requires a region where you can add page-specific content by using theASP.NET page designer. You need to add a control to the master page to define the region. Which control should you add？（）
A、PlaceHolder
B、ContentPlaceHolder
C、Content
D、Substituition
- B
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