联合国官方英语是美式还是英式？

It's not american or british english..

to tell you the truth..as long as you speak english then people will understand you ..it doesn't matter which accent you speak it in.

不分英式美式

来自不同的国家讲各自不同口音的英语！

口语当然各有不用。但写的话就是美式的了，始终都是在纽约。

In 1945, representatives of 50 countries met in San Francisco at the United Nations Conference on International Organization to draw up the United Nations Charter. The Organization officially came into existence on 24 October 1945, when the Charter had been ratified by China, France, the Soviet Union, the United Kingdom, the United States and a majority of other signatories. United Nations Day is celebrated on 24 October.