正常人昼夜尿最高比重与最低比重之差不少于（）

A.0.010

B.0.008

C.0.006

D.0.007

E.0.009

Virtualization is an approach to IT that pools and shares (36) so that utilization is optimized and supplies automatically meet demanD. Traditional IT environments are often silos, where both technology and human (37) are aligned around an application or business function. With a virtualized (38) , people, processes, and technology are focused on meeting service levels, (39) is allocated dynamically, resources are optimized, and the entire infrastructure is simplified and flexible. We offer a broad spectrum of virtualization (40) that allows customers to choose the most appropriate path and optimization focus for their IT infrastructure resources.

A．content

B．position

C．power

D．capacity