根据以上原则，本文指出了幼师口头作文教学还应有具体的操作步骤和较为合理的的序列安排。

According to the above principles, the article points out that the oral composition teaching in children teachers' schools should also have specific operating steps and more reasonable arrangements.

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在调度任务明确的情况下，该系统可以准确计算正确具体的操作步骤，并动态展示管道油品的流动方向。

In the scheduling task-specific circumstances, the system can calculate the concrete steps accurately and shows the flow direction of oil pipeline dynamically.

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因此，了解算法的类不是一个抽象类，而是一个定义了具体的操作步骤，用帮助类实现了接口的具体的类。

Thus, the class that knows the algorithm is not an abstract base class, but a concrete class that uses a helper that implements an interface defining the individual steps.

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