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【单选题】
现代物流是一个动态的、复杂的系统组合,并且各构成要素之间存在( ),往往随着消费需求、市场供给、购销渠道、商品价格等社会经济影响因素的变化其系统内的各构成要素及运行方式经常发生变动。A.
强烈的效益背反现象
B.
密切的相互关联性
C.
一个不合理机制
D.
时空矛盾
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