侯英超 | 发布日期:2014-12-14 18:04:37
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意大利科学家最近合成了新型的氧分子O4,对其说法正确的是……………………( ) A.O4是一种新型的化合物 B.O4是一种混合物 C.O4和O3都是氧元素的单质 D.一个O4分子含有2个O2分子 |