Fix grammaticality of the sentence: In conclusion, VHTR has a high-efficiency system that can produce electricity and hydrogen, and it has high rank of safety.
The first and last words of the sentence are the same.
The second and third words are the same.
The last word is the same.
The first and last words are different.
The first and last words are the same.
The first and last words are different.
The first and last words are the same.
The first and last words are different.
The first and last words are the same.
The first and last words are the same.
The first
The system has a high-efficiency and a high-safety level, and it is a good choice for the application of hydrogen and hydrogen.
The system has a high-efficiency and a high safety level, and it is a good choice for the application of hydrogen and hydrogen.
The system has a high-efficiency and a high safety level, and it is a good choice for the application of hydrogen and hydrogen.
The system has a high-efficiency and a high safety level, and it