23提问degrees-of-freedom-for-slope-coefficient是N-K-1?这个不是残差项的吗？问斜率的怎么也是N-K-1？（另外提一下，我用笔记本电脑提问，空格键好像没有起到空格的作用，按了就是视频暂停或者播放，不能空格？）

越往左上方的无差异曲线，效用越高，但是风险厌恶者的无差异曲线越陡峭，风险喜好者的无差异曲线越平缓。则这个题目的选择答案的方式就是对于风险厌恶者来说我就要选择效用答案最大的值，对于风险越喜好的就应该选择效用最小的值，是这样理解吗？

通过两国CPI换算名义汇率与真实汇率的时候，两国CPI统计时组成成分有差异怎么处理？需要剔除不同的部分，留下相同的商品服务构成的CPI指数来计算么？

国内发债就没有trutee这个概念，国内发债的受托人是指资金托管银行，请问trustee一般是什么债券才有？具体举例是什么实体是受托人？

您好，有两个问题哈，1.求average age这个公式是不是只能在直线折旧法下使用呢？ 2.求average depreciable life这个公式，只考虑gross cost也就是历史成本就可以嘛，不需要考虑残值吗？

21 A country with a persistent trade surplus is being pressured to let its currencyappreciate. Which of the following best describes the adjustment that mustoccur if currency appreciation is to be effective in reducing the trade surplusA Domestic investment must decline relative to saving.B Foreigners must increase investment relative to saving.C Global capital flows must shift toward the domestic market这一题能解释一下吗？

19 A country with a trade deficit willmost likely:A have an offsetting capital account surplusB save enough to fund its investment spending.C buy assets from foreigners to fund the imbalance.经常账户赤字为什么一定对应资本账户盈余？不是还有一个fiancial account吗？

3 In order to minimize the foreign exchange exposure on a euro-denominatedreceivable due from a German company in 100 days, a British company wouldmost likely initiate a:A spot transaction.B forward contract.C real exchange rate contract.3 B is correct. The receivable is due in 100 days. To reduce the risk of currencyexposure, the British company would initiate a forward contract to sell euros/buy pounds at an exchange rate agreed to today. The agreedupon rate is calledthe forward exchange rate.这一题是做了hedge吗？是英国公司100天后要收到欧元，所以现在卖出欧元的forword买入英镑的forward吗？他是签了2个forward吗？

19 Which of the following chronic deficit conditions is least alarming to the deficitcountry’s creditors?A High consumption.B High private investment.C High government spending.这题背景是什么？是如果一个国家经常账户出现逆差，债权人会觉得该国家偿债能力受影响吗？然后选项投资增加导致的逆差不会alarming 债权人是因为投资会增加收益是吗？

12 A large country can:A benefit by imposing a tariffB benefit with an export subsidyC not benefit from any trade restriction为什么选A