发动机速度特性指发动机的性能指标TE、PE、ge，随发动机转速n变化的规律。
参考答案：对
1003×5的积中间有______个0；1200×5的积的末尾有______个0．
It has been suggested that the land equally among the farmers.
A．is shared
B．should share
C．be shared
D．will be shared
