【判断题】HXD3C型电力机车避雷器F3属于车内避雷器,型号为YH10WT-43/108BN,串联)于主断路器和高压原边电流传感器之间,它主要抑制主断路器开闭时产生的操作过电压,避免对机车内部的控制电器产生过电压侵害。
【单选题】单手肩上投篮将球投出时,使肘关节伸的肌肉有:( )。
【简答题】DDR400内存的物理工作频率为( )。
【单选题】Taking the train across town is quicker than taking the bus. Taking the bus across town is slower than driving a car. Therefore, taking the train across town is quicker than driving a car.
【单选题】Mary sits ______ Mike and Lily. [ ]
【单选题】单手肩上投篮将球投出时,使肘关节伸的肌肉是()
【简答题】DDR400的物理工作频率为__________。(注意要写单位)
【单选题】Not until he retired from teaching three years ago ________having a holiday abroad. (2012·辽宁,32)