一台24口交换机，连接10台PC，划分了5个VLAN，则广播域有_________个。
B
暂无解析
Itisnolongeraproblem_______thepoorchildreninthisdistrictcangotoschool.
Hedoesn'tknowwhattosay,foritisthefirsttimethathe______withagirl.
求线性方程组的全部解。
若则，P(AB)=().
设随机变量X，若D(X)=3，则D(一X+3)=()．
