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Manufacturers of hydrogen generators have developed methods to use lower amounts of electricity to split water into hydrogen.Different electrolytes or catalysts are used in()the bonds between hydrogen and oxygen atoms that make up water.

Manufacturers of hydrogen generators have developed methods to use lower amounts of electricity to split water into hydrogen.Different electrolytes or catalysts are used in()the bonds between hydrogen and oxygen atoms that make up water.
A.loosening
B.splitting
C.strengthening
D.separating
正确答案:loosening