解释下列交易是如何在美国国际收支账户中的贷方和借方分别记录的，并说明每笔记录的分类： a．一个美国人购入一股德国股票，用在一家瑞士银行的账户开出的支票支付。 b．一个美国人购入一股德国股票，用在一家美国银行的账户开出的支票支付。 c．法国政府通过使用存在一家美国银行的美元，从法国公民手中买进法国货币的方式来进行官方外汇干预。 d．一个底特律的旅行者，在法国里昂一家豪华饭店吃了一顿饭，用VISA信用卡进行支付。 e．一个加州葡萄酒生产者，为伦敦葡萄酒品尝节运去一箱cabernet sauvignon葡萄酒。 f．位于英国的一家美国企业用在当地的收入购入额外的机器。 Explain how each of the following transactions generates two entries-a credit and a debit-in the American balance of payments accounts，and describe how each entry would be classified： a．An American buys a share of German stock，paying by writing a check on an account with a Swiss bank． b．An．American buys a share of German stock．paying the seller with a check on an American bank． c．The French government carries out an official foreign exchange intervention in which it uses dollars held in an American bank to buy French currency from its citizens。 d．A tourist from Detroit buys a meal at an expensive restaurant in Lyons，France，paying with a traveler's check． e．A California winegrower contributes a case of cabernet sauvignon for a London wine tasting． f．A U.S.-owned factory in Britain uses local earnings to buy additional machinery．