下列交易的价值是否应当计入国内生产总值?为什么? a．顾客在餐馆支付餐费。 b．一家公司购买一幢旧楼。 c．一家供应商向制造个人电脑的公司出售电脑芯片。 d．一位消费者从交易商手中买进一辆汽车。 Should the value of the following transactions be included as part of GDP?Why? a． A consumer pays for a meal at a restaurant． b．A company buys an old building． c．A supplier sells computer chips to a firm that makes personal computers． d．A consumer buys a car from a dealer．