下列哪项不是质量控制7种常用工具之一？（）

马斯洛学说中的人类最高层次的三大需要是()。

Performance of a contract can bring liabilities other than the stated and implied warranty and guarantee that have implications of risk, but are perhaps not as visible Two of these liabilities are ________ and ________ infringements.

在系统测试期间，按已识别原因的类型或类别记录了失败测试的数量。项目经理首先需要从最大故障领域着手来解决错误。项目经理应采用什么类型的工具或技术

合同中经常要求承包商支付保证金，支付保证金是用来确保主承包商支付：()