federal funds rate是指短期利率吗

NO.PZ2021052601000011 问题如下 When the sprebetween 10-yeUS Treasury yiel anthe ferfun rate narrows anthe same time the prime rate stays unchange this mix of incators most likely forecasts future economi A.growth. B.cline. C.stability. B is correct. The narrowing spreof this leang incator foretells a op in short-term rates ana fall in economic activity. The prime rate is a lagging incator antypically moves after the economy turns.该领先指标差距的缩小预示着短期利率的下降和经济活动的下降。优惠利率是一个滞后指标，通常在经济好转后才会变动。 所以长期利率一定是比短期利率低吗？万一高呢

NO.PZ2021052601000011 问题如下 When the sprebetween 10-yeUS Treasury yiel anthe ferfun rate narrows anthe same time the prime rate stays unchange this mix of incators most likely forecasts future economi A.growth. B.cline. C.stability. B is correct. The narrowing spreof this leang incator foretells a op in short-term rates ana fall in economic activity. The prime rate is a lagging incator antypically moves after the economy turns.该领先指标差距的缩小预示着短期利率的下降和经济活动的下降。优惠利率是一个滞后指标，通常在经济好转后才会变动。 我记得课件里是说长短期利率缩窄，可以认为短期利率变高，长期利率变低，短期利率变高是表明现在经济过热，央行采取紧缩政策；长期利率低，说明不看好未来经济。但是解答里说该指标预示短期利率降低，不太理解这个点，还辛苦帮解答一下。

NO.PZ2021052601000011 问题如下 When the sprebetween 10-yeUS Treasury yiel anthe ferfun rate narrows anthe same time the prime rate stays unchange this mix of incators most likely forecasts future economi A.growth. B.cline. C.stability. B is correct. The narrowing spreof this leang incator foretells a op in short-term rates ana fall in economic activity. The prime rate is a lagging incator antypically moves after the economy turns.该领先指标差距的缩小预示着短期利率的下降和经济活动的下降。优惠利率是一个滞后指标，通常在经济好转后才会变动。 结合当下（2022年），美联储为了应对通胀，今年以来一直在加息。也就是说，短期利率是由SEC根据当前经济情况决定的。那么在实务中，SEC也会根据本题中的这个依先指标来决定加息或降息吗？

NO.PZ2021052601000011 问题如下 When the sprebetween 10-yeUS Treasury yiel anthe ferfun rate narrows anthe same time the prime rate stays unchange this mix of incators most likely forecasts future economi A.growth. B.cline. C.stability. B is correct. The narrowing spreof this leang incator foretells a op in short-term rates ana fall in economic activity. The prime rate is a lagging incator antypically moves after the economy turns.该领先指标差距的缩小预示着短期利率的下降和经济活动的下降。优惠利率是一个滞后指标，通常在经济好转后才会变动。 不是因为市场参与方多了，债券交易更活跃，所以sprea小吗？

NO.PZ2021052601000011 问题如下 When the sprebetween 10-yeUS Treasury yiel anthe ferfun rate narrows anthe same time the prime rate stays unchange this mix of incators most likely forecasts future economi A.growth. B.cline. C.stability. B is correct. The narrowing spreof this leang incator foretells a op in short-term rates ana fall in economic activity. The prime rate is a lagging incator antypically moves after the economy turns.该领先指标差距的缩小预示着短期利率的下降和经济活动的下降。优惠利率是一个滞后指标，通常在经济好转后才会变动。 视频课里 有说到 当prime rate变化了，说明银行在没有颁发的情况下，才调整了最重要客户的rate，表示经济变差。但是题目中表示prime rate unchange，为啥也是cline？是不是我的理解错误？