公证机制
参考答案：
有关在两个或多个实体之间通信的数据的性质，如它的完整性、原发、时间和目的地等能够借助公证机制和得到确保。
Which of the following statements about the effects of interest rate volatility on value of bonds with embedded options is least accurate（）
A. As yield volatility increases, the value of a put-able bond increases.
B. A put-able bond’s value is its straight bond value plus the value of the embedded put option.
C. A callable bond’s value is its straight bond value plus the value of the embedded call option.
手机报客户国际及港澳台漫游时回复短信会收费吗？费用如何收取？
