GWD1-37,怎么有3个答案？请NN发表高见！

bluevironika

选D更合理 。文中是这样说的： With “indirect” purchases (such as

computers, advertising, and legal

services), which are not directly

related to production 非直接购买，例如广告，电子，法律服务，这些方式跟产品的联系不直接。