这道题算DEPS时，+49000是为什么？

为什么财务状况较差就是杠杠高。NI为负，不说明公司财务状况更差吗？

The category of persons who would be most likely to be harmed by an increase in the rate of inflation is: A homeowners with fixed 30-year mortgages. B retirees relying on a fixed annuity payment. C workers employed under contracts with escalator clauses. B我觉得说得有道理，但A的话，参考美国现在因为通胀加息，之后带来的利率提高，对于有房贷的人来说不也是更大的harm吗？

Which of the following is most likely to increase after an increase in aggregate real personal income? A Equity prices B Building permits for new private housing units C The ratio of consumer installment debt to income 收入上升，C的ratioD/I 不应该变小吗？B可以理解为收入增加，大家买房子的需求上升，所以buildingpermit上升？

The inventory–sales ratio is most likely to be rising: A as a contraction unfolds. B partially into a recovery. C near the top of an economic cycle. contraction的时候sales减少inventory增加，inventory-salesratio 上升，所以感觉应该是A？

As the expansion phase of the business cycle advances from early stage to late stage, businesses most likely experience a decrease in: A labor costs. B capital investment. C availability of qualified workers. 答案是C但感觉选B，latestage 不应该是降低投资吗？

Based on typical labor utilization patterns across the business cycle, productivity (output per hours worked) is most likely to be highest: A at the peak of a boom. B into a maturing expansion C at the bottom of a recession. 这道题能否解释一下，为何不是A？

The characteristic business cycle patterns of trough, expansion, peak, and contraction are:A periodic.B recurrent.C of similar duration. 为何不选periodic，也是周期性的意思？

下面那个公式是怎么得出的呢？讲义哪里有写呢？

这里C01为什么是-100不是-111.4呢