创新经济周期理论源于著名经济学家( )。A.萨缪尔森B.熊彼特C.马克思D.斯密 发布时间:2017-06-02 20:06 │ 来源:www.tikuol.com 题型:单项选择题 问题: 创新经济周期理论源于著名经济学家( )。A.萨缪尔森B.熊彼特C.马克思D.斯密
题型:单项选择题 When steering by autopilot,how often should the steering be checked?()A.12 times on each watchB.When time allowsC.At least once a watchD.No checking is necessary 查看答案