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问题 单项选择题

急流滩的当地水位上升或下降到某一高程时，滩势最为汹恶，比降和流速最大，流态紊乱，碍航最严重，这个临界水位高程称为该滩的（）.

A.成滩水位

B.当季水位

C.消滩水位

D.漂滩水位

答案

参考答案：B

问答题 简答题

为什么用手指背面接触停电体，而不用手指正面去接触？
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单项选择题

David Jordan, a level Ⅲ candidate in the CFA program, is a portfolio manager with Golson Investment Group. He manages a fixed-coupon bond portfolio with a face value of $120.75 million and a current market value of $116.46 million. Golson’s research department has forecasted that interest rates are going to decrease by 50 basis points. Based on this forecast, David estimates that the portfolio’s value will increase by 2.12 million if interest rates fall and will decrease by 2.07 million if interest rates rise. Which of the following choices is closest to the portfolio’s dollar duration（）

A. $4.19 million.

B. $3.67 million.

C. $3.50 million.
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