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【单选题】
博士伦隐形眼镜洗涤液的主要成分是双氧水(H 2 O 2 ),下列关于H 2 O 2 的叙述中正确的是 [     ]
A.
H 2 O 2 是由氢气和氧气组成的
B.
H 2 O 2 是由氢元素和氧元素组成的
C.
H 2 O 2 分子是由两个氢元素和两个氧元素构成的
D.
H 2 O 2 是由水分子和氧原子构成的
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这是特殊报盘,不以我方通常折扣为条件。
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