题目内容

创造性活动是由发散性思维和聚合性思维共同支持的活动。

A. 对
B. 错

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For controlling the movement of the vehicles or to stop them, efficient system is a necessity for a vehicle.

When going round a curve, the inner wheel has to travel a smallerin comparison to the outer wheel.

The wheels which are four in number are fitted below the carto support the load of the vehicle and passengers as well as to run the car.

The wheels are free to rotate at different speeds although they are provided with equal drive by the gear.