对于考虑链路传输的可靠性的大中型网络采用哪种拓扑结构（）
A.网状结构
B.双星形冗余结构
C.树形结构
D.总线形结构
参考答案：B
Hospital doctors don't go out very often as their work____________almost all their time.[ ]
A. takes away
B. takes in
C. takes over
D. takes up
现金流分析有助于预测商业银行未来较长时期内的流动性状况。( )
