天然橡胶的名称叫“聚异戊二烯”,它的单体为 A.ch2===chch2ch2ch3 B.ch3ch===chch===ch2 解析 Template




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tomski天然橡胶的名称叫“聚异戊二烯”,它的单体为 a.ch2===chch2ch2ch3 b.ch3ch===chch===ch2 coloring