蓄电池叉车的驱动特性最接近恒功率硬特性的要求。
参考答案：错
He often ______ ping-pong with his friends. Now they ______ ping-pong at school.[ ]
A. play; are playing
B. plays; play
C. plays; are playing
D. plays; is playing
活期储蓄存款的结息时间
