网络的拓扑结构主要有总线拓扑、环形拓扑、______、树形拓扑、混合形拓扑及网形拓扑。
参考答案：
在投资审计中，首要目标是审查（）。
A.投资是否确实存在
B.投资会计处理是否正确
C.投资是否为被审计单位所有
D.投资的增减变动记录是否完整
At a college football game,
of the seats in the lower deck of the stadium were sold. If
of all the seating in the stadium is located in the lower deck, and if
of all the seats in the stadium were sold, what fraction of the unsold seats in the stadium were in the lower deck
of the seats in the lower deck of the stadium were sold. If 
of all the seating in the stadium is located in the lower deck, and if 
of all the seats in the stadium were sold, what fraction of the unsold seats in the stadium were in the lower deck