w-e膜或者low-e玻璃可以明显有效的降低透光外围护结构的传热系数，其原理在于（）或者low-e玻璃具有对长波辐射的低发射率和高反射率。
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Your network contains an Active Directory forest. The forest contains multiple sites. You need to enable universal group membership caching for a site. What should you do（）
A. From Active Directory Sites and Services， modify the NTDS Settings.
B. From Active Directory Sites and Services， modify the NTDS Site Settings.
C. From Active Directory Users and Computers， modify the properties of all universal groups used in the site.
D. From Active Directory Users and Computers， modify the computer objects for the domain controllers in the site.
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