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【简答题】
已知动点M到定点F（1，0）的距离与到定直线l：x=-1的距离相等，点C在直线上。 （1）求动点M的轨迹方程； （2）设过定点F，法向量 =（4，-3）的直线与（1）中的轨迹相交于A，B两点，判断 能否为钝角并说明理由。
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Rather than caused
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Rather than caused
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具有大的共轭 π 键结构
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具有非刚性的平面结构
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具有最低的单重电子激发态为 型
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取代基团为给电子取代基
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取代基团为吸电子取代基
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between
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of
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