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【单选题】
You create a master page named Template.master. Template.master contains the following ContentPlaceHolder server controls.You also create 10 Web Forms. The Web Forms reference Template.master as their master page. Each Web Form has the following Content controls that correspond to the ContentPlaceHolder controls in Template.master.You need to configure the Web pages so that default content will be shown in the area2 ContentPlaceHolder control whenever a Web Form does not provide that content. What should you do? （）A.
Move default content inside area2 in Template.master. Remove area2 from Web Forms that do not provide content.
B.
Move default content inside area2 in Template.master. Leave area2 blank in Web Forms that do not provide content.
C.
Move default content inside area2 in the Web Forms. Remove area2 from Template.master.
D.
Create an additional ContentPlaceHolder control in Template.master named area2_default. Place default content inside area2_default. Remove area2 from Web Forms that do not provide content.
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举一反三
【单选题】关于金属材料的机械性能，下列说法不正确的是（）
A.
衡量金属材料的塑性，断面收缩率较延伸率更好
B.
弹性模量是衡量金属材料刚度的指标
C.
硬度是金属表面抵抗局部塑性变形的能力
D.
材料的屈服强度较小，则零件的储备强度小，工作可靠性差