女性，45岁。胸闷心悸8年余，加重伴咳嗽，双下肢水肿1月余，既往有风湿热病史。查体：BP130/80mmHg，脉搏70次／分，两肺散在湿啰音，伴少许哮鸣音。心率85次／分，律不齐，心前区可闻及舒张期杂音，双下肢水肿。

为明确诊断应进一步做哪些检查（）

A.血常规

B.ECG

C.胸片

D.心脏彩超

E.心肌酶

F.血培养

G.D-二聚体

H.血气分析

I.心肌核素显像

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.

where both technology and human（）are aligned around an application or business function.

A．profits

B．costs

C．resources

D．powers