构成供应链的成员企业在供应链的每一个层级只有一家。
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4. There are generally five strategies involved in vocabulary learning: Reviewing regularly,___, Organizing vocabulary effectively, ______ and Managing a strategy use
研究表明,性格特征在弱环境中比在强环境中更能预测行为。
资源成本动因是以一个成本对象(产品或服务)需要的作业量,是产品成本增加的驱动因素。()
2. ______and _______are the most frequently used in mechanical practice