题目内容

客户使用4K超清业务须具备条件为()

A. FTTH接入,至少具备30M带宽
B. 办理高清iTV,有4K机顶盒
C. 有4K电视机
D. 进入4K专区观看

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乙肝病毒感染检测主要指标不包括()。

A. 表面抗原
B. 核心抗原
C. e抗原
D. e抗原抗体

You are creating a custom control. The UI of the control must contain several text boxes and two buttons. The control must be available in the global assembly cache for reuse across multiple Web applications. You need to achieve this functionality by using the minimum amount of code. What should you do? ()

A. Create a control that derives from System.Web.UControl.
B. Create a control that derives from System.Web.UWebControls.CompositeControl.
Create a control that derives from System.Web.UWebControls.WebControl.
D. Create a control that derives from System.Web.UUserControl.

安全带的拴挂要求是什么?

高层建筑二次供水常见的污染不包括()

A. 生物性污染
B. 铅、砷、汞、镉等污染
C. 铁、锰、氯仿、四氯化碳、亚硝酸盐的含量均较出厂水增加
D. 谢射性污染

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