题型:单项选择题 共用题干题 Fair and(1)competition in govemment procurement around the world is good business and good public policy.Competitive pricing,product(2)and performance improvements result from competitive practices and help ensure that government authorities get the best(3)for the public they serve.空白(1)为()A.openB.continueC.dependentD.reliable 查看答案
题型:单项选择题 以下关于SPU描述正确的是()A.SPU是将28V的直流电转换为270V的直流电B.SPU位于后货舱C.SPU是将115V的交流电转换为28V的直流电D.SPU是将28V的直流电和115V的交流电转换为270的直流电 查看答案