()以外的列车在非到发线上接车或发车的调度命令准许列车调度员或车站值班员使用列车无线 发布时间:2017-07-29 03:33 │ 来源:www.tikuol.com 题型:单项选择题 问题: ()以外的列车在非到发线上接车或发车的调度命令准许列车调度员或车站值班员使用列车无线调度通信设备向司机发布、转达。A、旅客列车B、军用列车C、路用列车D、货物列车
题型:单项选择题 A certain packing crate contains between 50 and 60 books. How many books are there in the packing crate ?() (1)If the books are counted out by three, there will be one book left over. (2)If the books are counted out by sixes, there will be one book left over.A.条件(1)充分,但条件(2)不充分.B.条件(2)充分,但条件(1)不充分.C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.D.条件(1)充分,条件(2)也充分.E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分. 查看答案