Which two statements are true about the digital audio in a VoIP network？（） ["Standard encoding techniques create an uncompressed digital data rate of 4000 bps.","Standard encoding techniques create an uncompressed digital data rate of 8000 bps.","Standard encoding techniques create an uncompressed digital data rate of 64，000 bps.","Voice quality is not a concern if compression is not used.","Two methods of quantization are linear and logarithmic.","Two methods of compression are u-law and a-law."]
Which routing protocols can be used within the enterprise network shown in the diagram?（） ["RIP v1","RIP v2","IGRP","OSPF","BGP","EIGRP"]
驾驶员自身素质血压，低压不得高于（） ["90","80","100","70"]
利用下表资料，计算人民币汇率的综合汇率变动率。
三位一体
固结作用
