When you are driving a car, you directly control all three.You can turn the steering wheel to change direction.You can downshift the gears to go up a steep hill to get more traction.

• 运营管理的最大挑战是策略的传达，如果要求雇员和经理讲述他们组织的策略，他们大多数都不能非常有条理地加以阐述。