1.什么样的操作，算是应用soft dollar、直接造福客户？请举几个例子，谢谢。 2.如果是买数据库database，算不算directly benefit？

You own shares of a company that are currently trading at $30 a share. Your technical analysis of the shares indicates a support level of $27.50. That is, if the price of the shares is going down, it is more likely to stay above this level rather than fall below it. If the price does fall below this level, however, you believe that the price may continue to decline. You have no immediate intent to sell the shares but are concerned about the possibility of a huge loss if the share price declines below the support level. Which of the following types of orders could you place to most appropriately address your concern? Short sell order. Good-till-cancelled stop sell order. Good-till-cancelled stop buy order. 原版书后题选B，为什么要加一个定语GOOD TILL CANCELLED 而不是简单的 stop sell？

能否翻译一下三个选项

能否翻译下三个选项

老师你好，请问47题为什么C不对？ol的ni是先低后高对吗？

这道题里面with a higher frequency of negative deviation from the mean是啥意思？

C 调构成会导致周转 哪里错？

第18题怎么解

If a bond has a convexity of 120 and a modified duration of 10, what is the convexity adjustment associated with a 25 basis point interest rate decline? A +0.075%. B -2.875%. C -2.125%. 不应该是0.5*（0.0025）^2 *120=0.0375%?

老师，B为什么不对