法定佣金具有( )，当事人各方都应遵守。
A．普遍性 B．法制性C．强制力 D．公平性
参考答案：C
the Internet is of great help,I don’t think it’s a good idea to spend too much time on it. [ ]
A.If
B.While
C.Because
D.As
Ethernet物理地址长度为( )。
A．6bit
B．24bit
C．48bit
D．64bit
