单项选择题 Quality planning tools are often used to help plan effective quality management activities.() is one of such tools,which involves company actual or planned project practices to those or other projects to generate ideas for improvementand to provide a basis by which to measure performance.

单项选择题 qd.（）

单项选择题 决策树分析方法通常用决策树图表进行分析，很据下表的决策树分析法计算，图中机会节点的预期收益EMV分别是＄90和＄（）（单位：万元）