【单选题】( )圆柱齿轮是指用齿向与轴线平行的齿轮完成平行轴传动的一种齿轮传动形式。
【判断题】量子物理学的开创者和奠基人是爱因斯坦。()
【单选题】When he realized the true nature of the proposal, he ______ all communication with the group.
【简答题】When he realized the police had spotted him, the man ________ the exit as quickly as possible. A) made off B) made for C) made out D) made up
【判断题】隐形条码能达到既不破坏包装装潢整体效果,也不影响条码特性的目的,同样隐形条码隐形以后,一般制假者难以仿制,其防伪效果很好,并且在印刷时不存在套色问题。()
【单选题】When he realized the true nature of the proposal, he ______ all communication with the group.
【单选题】When he realized the police had spotted him, the man______the exit as quickly as possible.
【单选题】某驾校将自己名下的一部行政用车改为教练车,在保险合同的民事法律关系上是属于:( )