选择题 现有乙酸和两种链状单烯烃的混合物，若其中氧的质量分数为a，则碳的质量分数是 [???? ]
A．![]()
600)makesmallpic(this,600,1800);\' style=\"WIDTH: 54px; HEIGHT: 50px; VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060705/skclyxow14g.png\">
B．![]()
600)makesmallpic(this,600,1800);\' style=\"WIDTH: 32px; HEIGHT: 42px; VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060705/ewcbob1lvoz.png\">
C．![]()
600)makesmallpic(this,600,1800);\' style=\"WIDTH: 65px; HEIGHT: 46px; VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060705/2v0woktldyc.png\">
D．![]()
600)makesmallpic(this,600,1800);\' style=\"WIDTH: 71px; HEIGHT: 43px; VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060705/3i05xpln323.png\">
选择题 现有乙酸和两种链状单烯烃的混 合物，若其中氧的质量分数为a，则碳的质量分数是 [???? ]
A．![]()
600)makesmallpic(this,600,1800);\' style=\"WIDTH: 54px; HEIGHT: 50px; VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060705/skclyxow14g.png\">
B．![]()
600)makesmallpic(this,600,1800);\' style=\"WIDTH: 32px; HEIGHT: 42px; VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060705/ewcbob1lvoz.png\">
C．![]()
600)makesmallpic(this,600,1800);\' style=\"WIDTH: 65px; HEIGHT: 46px; VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060705/2v0woktldyc.png\">
D．![]()
600)makesmallpic(this,600,1800);\' style=\"WIDTH: 71px; HEIGHT: 43px; VERTICAL-ALIGN: middle\" src=\"http://www_php168_com/91files/2016060705/3i05xpln323.png\">
本题答案：C
本题解析：
本题所属考点：【有机物燃烧规律的计算】
本题难易程度：【一般】
Every one can keep house better than her mother till she trieth. 姑娘都说自己比妈妈会当家.
