【简答题】Please list the four characteristics of transportation.
【单选题】删除数据表student的语句是______。
【简答题】Please list at least four common discrepancies of Insurance Policy.
【单选题】删除数据表student的命令是________。
【简答题】please list four important liability conventions.
【简答题】Please list at least four common discrepancies of Draft
【单选题】删除数据表student的语句是( )。