肝肺综合征是指腹性肝炎和肝硬化患者可出现气促、呼吸困难、肺水肿、间质性肺炎、胸腔积液和低氧血症等病理和功能改变。()
参考答案:对
简述补充性立法。
Astute service providers realize that the continued support of legacy X.25 and asynchronous network element using separate operations network is cost(16).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 (17) .Hence, additional maintenance procedures must be maintained and administrative records are (18) .The duplication of transport facilities to carry (19)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 (20) network elements to IP-based DCns is alogical strategy.
空白处(19)应选择()
A.overlook
B.overlie
C.overlay
D.overleap