老师你好，这题为何不用before fees（120），而用的是after fees（113.6），能给解释一下吗？谢谢

第17题解题思路是什么

0Y1Y，1Y1Y，2Y1Y，3Y1Y，对应的不就是S1 S2 S3 吗？

第14题解题思路是什么

12.单选题 已收藏 标记 纠错 The difference between an issuer rating and an issue rating is that: A The issuer rating applies to all of an issuer's bonds, whereas the issue rating considers a bond's seniority ranking. B The issuer rating is an assessment of an issuer's overall creditworthiness, whereas the issue rating is always higher than the issuer rating. C The issuer rating is an assessment of an issuer's overall creditworthiness, typically reflected as the senior unsecured rating, whereas the issue rating considers a bond's seniority ranking (e.g., secured or subordinated). 查看解析 上一题 下一题 正确答案C 您的答案C本题平均正确率：86% credit ratings难度：一般 推荐：      答案解析 问： 1.A前半句，说主体评级适用于所有的债券评级，应该也没错吧，先是要拿公司作为整体参考啊？ 2.C中（e.g., secured or subordinated)和ranking的关系是，有抵押品的怎么算排行？ 3.subordinated是什么债券？ 请逐次回答 谢谢

一发股利价格就下跌？为什么？

第7 8题解题思路是什么

第4题解题思路是什么

浮动利率对应的利息折现求和等于固定利率对应的利息折现求和，可以求出固定利率，这个原理懂了，关键是这里的浮动利率是怎么事先确定的呢

Which of the following would lead the credit spreads to widen? A The credit cycle improves. B Economic conditions worsen. C Broker-dealers become more willing to provide capital. 查看解析 下一题 正确答案B 您的答案C本题平均正确率：97% Yield spread难度：一般 推荐：      答案解析 Credit spreads widen as economic conditions worsen. Spreads narrow as the credit cycle improves and as broker-dealers provide more capital to bond markets. 问：A C为啥不对，可否用例子解释一下，解析没听懂！