A:信息交换方式
B:网络使用者
C:传输控制方法
D:网络覆盖范围
如图,在菱形ABCD中,过点B作BE⊥AD,BF⊥CD,垂足分别为点E,F,延长BD至G,使得DG=BD,连结EG,FG,若AE=DE,则 EGAB =____.
Mothers holding jobs outside the home should have ________ schedules to make it easier to care for their children. ( )