已知 3 33 32 31 23 22 21 13 12 11 = a a a a a a a a a ,则 = + + + - - - 13 33 12 32 11 31 13 23 12 22 11 21 13 12 11 2 2 2 3 2 3 2 3 2 a a a a a a a a a a a a a a a ( )
选项:
A:-18
B:-6
C:6
D:18
发布时间:2024-06-11 15:34:14