Which service component in the implement phase is typically performed prior to the handover of a wireless solution to the customer’s operations organization？（） ["systems integration","skill assessment","systems acceptance testing","wireless check ","project close out"]
QoS refers to the ability of a network to provide improved service， over various underlying technologies， to select network traffic. Which two traits are inherent to QoS？（） [" reference to network ability to provide improved service to all network traffic"," reduction in delay， jitter， and packet loss"," equal handling of all packets"," support for real-time applications"," best-effort actio"]
农田杂草
高峰体验是（）提出的著名学说。
下列属于压力容器的主要安全附件的有（）。 ["安全阀","液位计","压力表","爆破片"]
常见的操作过电压有：切合（）切除（）及切合电容器引起的过电压。
