首页 › 答案 › 题库 › 知到智慧树 › 未分类

In 2012, Jiaolong manned submersible made a 7000 meter sea trial. Before that, only the US, France and Russia had manned deep submarines in the world.

In 2012, Jiaolong manned submersible made a 7000 meter sea trial. Before that, only the US, France and Russia had manned deep submarines in the world.
A.正确
B.错误
正确答案：B

标签：向世界讲述中国

上一条：Jiaolong is the first operational deep-sea manned submersible designed independently in China. It is the most capable operational manned submersible in the world at present.

下一条：Yuan Longping is an expert on hybrid rice breeding in China and a pioneer in the research and development of hybrid rice in China.