“保证各国在华‘机会均等’,对外‘门户开放’”这一内容出自

 “保证各国在华‘机会均等’,对外‘门户开放’”这一内容出自下列哪个条约

A.《九国公约》                        B.《凡尔赛和约》

C.《四国条约》                        D.《巴黎和约》

答案

A

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