In 2012， Jiaolong manned submersible made a 7000 meter sea trial.Before that， only the US， France and Russia had manned deep sub-未来题库

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

未来题库→百科

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：错误

Tags:manned submersible submarines

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