临时加开或停运列车、有车线接车、停止或恢复售票、特殊情况下需要封站时，须发布书面调度命令，并填记调度命令登记簿。（）
参考答案：错
— ____ you read the newspaper?
— Yes. I ____ it on the bus while I was on my way to work.
A．Have; read
B．Did; read
C．Have; have read
D．Did; have read
切削用量各要素对切削温度有什么影响？
