强化是指不断通过改变环境的刺激因素来达到增强、减弱或消除某种行为的过程。按强化的性质和目的分,一般有正强化、负强化、惩罚 强化是指不断通过改变环境的刺激因素来达到增强、减弱或消除某种行为的过程。按强化的性质和目的分,一般有正强化、负强化、惩罚、自然消退四种强化方式。负强化是指某一行 分类:中级 题型:填空题 查看答案
根据下列选项,回答题。Documentary credits are separate transactions fro 根据下列选项,回答题。Documentary credits are separate transactions from the sales contract 分类:中级 题型:填空题 查看答案
Which of the following words applying to any date or period Which of the following words applying to any date or period in the credit referr 分类:中级 题型:填空题 查看答案
The insurer is not responsible for partial loss or damage of The insurer is not responsible for partial loss or damage of cargo caused by nat 分类:中级 题型:填空题 查看答案