单项选择题
John has bought twenty for the coming birthday party. A. bottle of juice B. bottles of juice C. bottle of juices D. bottles of juices
单项选择题 3.采购和供应相同，和订购、购置、购买没有区别。 A、正确 B、错误
单项选择题 下面与Am I my brother’s keeper?表达意义相同的是 A、 Am I responsible for my brother? B、Should I know everything about my brother? C、 should do everything for my brother?
单项选择题 下列哪项不是工业4.0的主题之一( )。 A. 智能工厂 B. 智能生产 C. 智能物流 D. 智能装配
