设备安全加固手段包括（）。
A.加强自身的密码强度
B.设置自身的访问控制
C.设置访问控制列表控制用户互动
D.关闭FTP等服务
参考答案：A, B, D
与全口义齿前牙大小的选择无关的是（）
A.唇的长短
B.两侧口角线的距离
C.面部形态
D.笑线
E.颌间距离
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
