单选题:在我国,沈阳—大连、济南—青岛—烟台、福州—厦门等区域已经基本具备了第二阶段物流业发展的条件,该阶段是( )

题目内容:
在我国,沈阳—大连、济南—青岛—烟台、福州—厦门等区域已经基本具备了第二阶段物流业发展的条件,该阶段是( ) A.运输主导阶段
B.物流业的拓展阶段
C.物流系统服务阶段
D.供应链阶段

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