high-qualitydebt不是说明default risk小吗，那为什么还要关注呢

capacity里不是也有strategy分析吗？为什么不选A呢

这题可以再解释一下吗？为什么不选B呢

不是很理解消费者剩余为什么和总的收入有关系？是不是可以理解为，总收入=Q*P，Q是一个线性函数，P是一个常数函数，两个函数的乘积是相交围成的面积？

why when policy rate > neutral rate is contractionary? I don't know what is the rationale behind.

When the ROC oscillator crosses zero in the same direction as the direction of the trend, this movement is considered a buy or sell signal. 请问这句话是什么意思

why money supply decrease, then the interest rate will increase?

whymoneysupply下降，interestrate會升？

看不懂这句

这段没看懂