外出上井两车以上运输放射源时为防止源车出现意外,应该如何行车?
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Which statement about Remotely Triggered Black Hole (RTBH) is true?()
A. Route tagging is one of the techniques used by RTBH
B. It is used for BGP authentication
C. It cannot work with static routes
D. It uses extended ACLs for blocking attacks by creating a black hole
E. Before configuring RTBH LDP must be enabled on the interface
焊缝金属主要成分为纯镍的铸铁焊条,其焊条型号为EZNiFe。
A. 正确
B. 错误
为实现加工过程中所需各种运动,机床必须具备(),运动源和传动装置.