Students should be able to make a selection from a range of reference materials and focus their attention on one of them.

学生要能从多种参考资料中作出选择，把注意力集中在其中一种上。

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The Domain and Completeness screen allows you to make specific decisions around the completeness and validity of the values, whether by specific value, by range, or via a reference table.

通过 Domain and Completeness 屏幕，可以根据特定的值、范围或通过一个引用表做出关于值的完整性和有效性的决定。

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Note: Virtual and physical systems hardware and software span a broad range, so the procedures in this article are meant as a reference guide.

注意：虚拟和物理系统的硬件和软件跨越的范围很广，因此本文介绍的步骤仅作为一个参考。

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The maturity model shown in this pyramid is used to help position EECM solution vendors into one of three tiers, with additional criteria including range of functional coverage, available resources and reference accounts.

FORBES: Research Summary: Enterprise Energy & Carbon Management Solutions