手推调车时，在货场或专用线内，手推调车不越过警冲标时，须经（）准许。手推调车完了后，将车辆变动后的位置，报告有关调车领导人。
A. 调车区长
B. 车站值班员
C. 货运员
D. 调车指导
查看答案
Which four actions are possible during an Online Data file Move operation?（）
A. Creating and dropping tables in the data file being moved
B. Performing file shrink of the data file being moved
C. Querying tables in the data file being moved
D. Performing Block Media Recovery for a data block in the data file being moved
E. Flashing back the database
F. Executing DML statements on objects stored in the data file being moved
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