【单选题】【消耗次数：1】
下列关于企业信息系统的开发方式叙述正确的是（）。
①
自主开发方式在需求明确、用户适应性方面较优，但风险较大
②
委托开发方式在用户适应性方面较优，需求满足较好，但不利推动变革
③
购置商品软件方式在项目控制方面较好，有利于推动变革，但用户适应性一般
④
委托开发和购置商品软件方式有利于本企业信息人才的培养
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管理信息系统的开发方式有[填空]、[填空]、[填空]和[填空]。
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原型系统可作为[填空]，有利于用户培训和开发同步，开发过程也是学习过程。
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