liability里面accrual账户只有A/P和Unearned Revenue，这里的accrued expense和A/P，Unearned Revenue之间有什么关系呢？

第2点，扔掉资产，为什么会导致利润表降低啊？

老师您好，我想请问有规定AOR对应365天一年，DR对应360天一年吗？这题来自原版书课后题，如果没规定，为啥选C不选B噢？

老师这里的private equity是不是可以对等的看成天使轮，A轮甚至B轮，总之只要在IPO之前的股权收购或者投资行为都算是私募股权范畴的？

久期为什么是利率风险呢，怎么理解的

老师，一级也讲过法定所得税率不等于有效税率，我想问下，这是当时一级课件，我标阴影这句话，我不理解，麻烦帮我解释下吧，谢谢！

下面那个公式为什么是期间的收益率呢，难道不是利率的变化比率吗

惠普的计算器怎么计算组合数？

解析没有看懂。可否中文说一遍？

請問在原版書中 reading 25. Q6. 的解答中 Active risk is affected by the degree of cross-correlation. The correlation of two stocks in different sectors is most likely lower than the correlation of two stocks in the same sector. Therefore, the correlation of the energy/financial pair is most likely lower than that of the automobile/automobile pair. Because both positions were implemented as an overweight and underweight, the lower correlation of the two stocks in the new position should contribute more to active risk than the two-stock position that it replaced. cross-correlation 越低不是代表 risk to the total portfolio 越低嗎? 為什麼是 contribute more to active risk than the two-stock position that it replaced? 請問是因為 portfolio beta 偏離了 benchmark 的關係嗎?