Virtualization is an approach to IT that pools and shares（）so that utilization is optimized and supplies automatically meet demand. Traditional IT environments are often silos, where both technology and human（）are aligned around an application or business function. With a virtualized（）, people, processes, and technology are focused on meeting service levels, （）is allocated dynamically, resources are optimized, and the entire infrastructure is simplified and flexible. We offer a broad spectrum of virtualization（）that allows customers to choose the most appropriate path and optimization focus for their IT infrastructure resources.

Virtualization is an approach to IT that pools and shares（）so that utilization is optimized and supplies automatically meet demand.

A．advantages

B．resources

C．benefits

D．precedents

额定电压3千伏的互感器在进行大修后作交流耐压试验，应选交流耐压试验标准为（）千伏。

A.10

B.15

C.28

D.38