下表是某年份内两家制造同类产品的企业在生产和销售方面的几组数据比较。
注:活劳动与物质消耗总量=总成本企业利润=总收益(平均售价×销售量)-总成本
请用所学经济常识简要回答
(1)两家企业在生产经营方面各自的优势和不足是什么?
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(2)该年份内哪家企业经济效益较好?
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(3)两家企业如何进一步提高经济效益?
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