供油提前角自动调节装置安装在联轴器与发动机曲轴之间。（）
参考答案：错
He has left out the most important reason why he________last night.[ ]
A. stayed up
B. put up
C. picked up
D. kept up
我国通用商品条码国家标准采用的是EAN码结构。( )
ost important reason why he________last night.[ ]