根据公信原则的规定，下列关于物权变动的说法正确的是（）。

A.法律推定不动产的占有人对其占有的不动产享有物权

B.如果不动产物权的变动没有进行登记，则不能发生变动的法律效果

C.如果动产物权人没有进行交付，一般不发生动产所有权变动的法律效果

D.不动产的登记名义人享有登记于其名下的不动产物权

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.

（145）是（）

A.traditional

B.dominancy

C.redundancy

D.legacy