A hot air start pipe indicates that there is ().
A. inefficient cooling
B. a leaking air start valve
C. a clogged drain valve
D. a leaking air bottle
各种设备、设施应满足旅客列车200km/h(250km/h区段应满足旅客列车250km/h),货物列车120km/h运行安全、平稳性的要求。()
A. 正确
B. 错误
NTA可以和()日志配合,实现MPLSVPN的流量分析。
A. NetStreem V9
B. NetStreem V5
C. NetFlow V9
D. NetFlow V5