What are the steps for configuring stateful NBAR for dynamic protocols？（）
A. Use the command ip nbar protocol-discovery to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface.
B. Use the command match protocol rtp to allow identification of real-time audio and video traffic. Use thecommand ip nbar port-map to extend the NBAR functionality for well-known protocols to new port numbers.
C. Use the command match protocol to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface.
D. Configure a traffic class. Configure a traffic policy. Attach the traffic policy to an interface.
E. Configure video streaming. Configure audio streaming. Attach the codec to an interface.
台地园是意大利的传统造园形式，其特点及造园手法可借鉴用于我国的（）建园。
A. 平地
B. 山地
C. 湿地
D. 沙漠地
按照九年义务教育的要求，美术教育是我国所有公民在中小学阶段所必须接受的。
在变速器总成效率和寿命试验前所进行的磨合试验中，其第一轴输入扭矩M1=（）。
A. 1/4Mmax
B. 1/3Mmax
C. 1/2Mmax
D. 0
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