单项选择题企业通过各种方式力求在现有市场上增加现有产品的销售。这种方式为 A、市场渗透 B、市场开发 C、产品开发 D、多元化
单项选择题2. A、He may give the woman some paper in the afternoon. B、He doesn’t need typing paper. C、He has bought some typing paper for the woman. D、He thinks the woman should use her own paper. 无解析