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。（ ）
举一反三
- 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.
- 35.In June 2012, Jiaolong successfully dived 7020 meters deep in Mariana trench setting a new record of manned deep-sea submersible in China as well as a new world record for manned submersible. A: True B: False
- The manned submersible Fendouzhe set a new international record by diving to a depth of 10,909 meters.
- In 2020, the manned submersible Fendouzhe (奋斗者) set a new national record by diving to a depth of 10,909 meters.
- China is the world’s __________ country to independently develop and deploy manned space flight technology.