题目点P(a,b,c)关于x轴的对称点是()A. (-a,-b,c)B. (-a,-b,-c)C. (a,-b,-c)D. (a,-b,c)点P(a,b,c)关于x轴的对称点是()A. (-a,-b,c)B. (-a,-b,-c)C. (a,-b,-c)D. (a,-b,c)题目解答答案C. (a,-b,-c)