单选题:生产具有外部性,即运输生产是与外部环境不断地发生着物质、能力和信息的交换,这体现了运输生产的( )特点。

题目内容:
生产具有外部性,即运输生产是与外部环境不断地发生着物质、能力和信息的交换,这体现了运输生产的( )特点。 A.开放性
B.增值性
C.同一性
D.派生性
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