信息( )是指某一沟通媒介能够承载的信息量，以及该媒介可使发送者与接受者达成共识的程度。
A．系统性 B．充分性C．全面性 D．有效性
参考答案：B
国家职业资格证书有（）个等级
A、3
B、4
C、5
D、8
Which of the following statements about a bond's cash flows is TRUE The appropriate discount rate is a function of:（）
A. the risk-free rate plus the return on the market.
B. the risk-free rate plus the risk premium.
C. only the risk premium.
