Which three characteristics of the traffic flow are taken into consideration when the QoS-for-VPNs feature （QoS pre-classify） provides packet classification and applies appropriate QoS service on tunnel interfaces？（） ["IP precedence bits","DSCP bits","original port numbers","DE bits","source IP address","destination IP addre"]
同时出被称为一价定律的汇率决定理论是（）。 ["购买力平价模型","利率平价模型","货币主义汇率模型","国际收支理论"]
土地处理技术
简述采用两个PI调节器分别形成内外闭环的效果。
在利率作用问题上，凯恩斯与西方传统理论有何异同？
情报政策的范围与主要内容
