设M(3,-1,4),A(4,3,-1),若,则点B应为[]A.(-1,-4,5)B.(7,2,3)C.(1,4,-5)D.(-7,-2,-3)-高二数学

题目简介

设M(3,-1,4),A(4,3,-1),若,则点B应为[]A.(-1,-4,5)B.(7,2,3)C.(1,4,-5)D.(-7,-2,-3)-高二数学

题目详情

设M(3 ,-1 ,4) ,A (4 ,3 ,-1 ),若,则点B应为  
[     ]
A.(-1,-4,5)    
B.(7,2,3)  
C.(1,4,-5)        
D.(-7,-2,-3)
题型:单选题难度:中档来源:同步题

答案

B

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