根据工程经济学理论，现金流量的要素包括( )。
A．基准收益率
B．资金数额
C．利率大小
D．现金流量的方向
E．现金流量的作用点
参考答案：B,D,E
建筑物内普通市话电缆芯线接续，应采用的方法为（）。
A.扭绞接续
B.模块直接
C.复式压接
D.扣式接线子直接
Only ____from university ____how difficult it was to make a good career.
A．when did I graduate; I realized
B．when did I graduate; did I realize
C．when I graduate; did I realize
D．when I graduated; did I realize
