假设某厂计划生产甲、乙两种产品，现库存主要材料有A类3600公斤，B类2000公斤，C类3000公斤。每件甲产品需用材料A类9公斤，B类4公斤，C类3公斤。每件乙产品，需用材料A类4公斤，B类5公斤，C类10公斤。甲单位产品的利润70元，乙单位产品的利润120元。问如何安排生产，才能使该厂所获的利润最大(Suppose a factory plans to produce two kinds of products such as a and B. The main materials in stock are 3600 kg, 2000 kg B and 3000 kg in class C. The products are 9 kg, 4 kg B and 3 kg C, for each product. Each piece of product is 4 kg of material a, 5 kg B, 10 kilograms of class C. The profit of a unit product is 70 yuan, and the profit of unit B is 120 yuan. Ask how to arrange production to make the best profit of the factory)