【判断题】半轴花键与半轴齿轮及突缘键槽的侧隙不大于原设计规定0.30mm。
【判断题】公元868年印制的《金刚经》是世界上现存最早的雕版印刷品。
【判断题】公元868年印制的《金刚经》,是现存世界上最早的、有确切日期的雕版印刷品。
【单选题】What did Andy do when his grandfather was sick?
A.
He took care of the farm.
B.
He read his grandfather stories.
C.
He told his grandfather the news.