一冠心病患者，心悸气短1个月，行心脏超声检查，结果如图所示，其EF56%。为改善其心功能宜用()

A．地高辛

B．速尿

C．美托洛尔

D．硝普钠

E．氨联吡唑酮

(71) data effectively is crucial for success in today’s competitive environment. Managers must know how to use a variety of tools. Integrated data takes information from different sources and puts it together in a meaningful and useful way. One of the difficulties of this is the (72) in hardware and software. (73) integration uses a base document that contains copies of other objects. (74) integration uses a base document that contains the current or most recent version of the source document it contains. (75) provides an overview of the program written in" plain" English, without the computer syntax.

72（）

A．similarity

B．interoperability

C．diversity

D．interaction