近来有研究报告称:除去“普通水”里含有的氮气和氧气后,水的去

近来有研究报告称:除去“普通水”里含有的氮气和氧气后,水的去污能力将大为加强。对此的下列理解不正确的是                    【    】

A.普通水是混合物                 B.除去氧气后的水不再含有氧元素

C.“普通水”含有氮分子             D.“普通水”含有氧分子

 

答案

B

解析:略

 

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