当前位置：在线题库搜索＞[单选题]石油成分非常复杂,但其含量最多的化学元素成分为( )的答案是什么？
问题：
[单选题]石油成分非常复杂,但其含量最多的化学元素成分为( )
A、氢
B、碳
C、硫
D、氧
参考答案：
B
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