从2013年7月起，中国人民银行决定全面放开金融机构贷款利率管制，由金融机构根据商业原则自主确定贷款利率水平。材料中央行的决定有助于各商业银行

A．扩大存款业务，吸收更多社会资金

B．拓展结算业务，提高银行盈利水平

C．改善经营管理，努力提升服务水平

D．优化资源配置，降低企业融资成本

astute service providers realize that the continued support of legacy X.25 and asynchronous network element using separate operations network is cost (141) . For example, the maintenance of multiple networks can require additional staff. Often, this staff must be trained on multiple vendor technologies, sometimes requiring parallel groups specializing in each (142) . Hence, additional maintenance procedures must be maintained and administrative records are (143) . The duplication of transport facilities to carry (144) network traffic is an inefficient use of resources. And not surprisingly, more technologies installed in a central office means the necessity for more physical space and an increase in power connections and power consumption, migration of these (145) network elements to IP-based DCns is alogical strategy.

（142）是（）

A.line

B.platform

C.sever

D.switch