公安工作是围绕国家安全和社会治安秩序的需要适用法律、法规的专门工作。( )
参考答案：对
下列属于常用件的是（）
Ⅰ．弹簧；
Ⅱ．齿轮；
Ⅲ．螺栓。
A．Ⅰ+Ⅱ
B．Ⅰ+Ⅲ
C．Ⅱ+Ⅲ
D．Ⅰ+Ⅱ+Ⅲ
To a router, a flow is a (1) of packets that share the same Characterstics, such as traveling the same (2) ,using the same (3) ,having the same kind of security, and so on. A router that supports the handling of flow labels has a (4) table. The table has an entry for each active flow label; each entry defines the (5) required by the corresponding flow label.
2（）
A．path
B．rout
C．circuit
D．way
