∴当a>0、b>0、c>0时,x=
| a |
| |a| |
| |b| |
| b |
| c |
| |c| |
| |abc| |
| abc |
当a、b、c中有一个小于0时,不妨设a<0、b>0、c>0,
∴x=
| a |
| |a| |
| |b| |
| b |
| c |
| |c| |
| |abc| |
| abc |
当a、b、c中有两个小于0时,不妨设a<0、b<0、c>0,
∴x=
| a |
| |a| |
| |b| |
| b |
| c |
| |c| |
| |abc| |
| abc |
当a<0、b<0、c<0时,x=
| a |
| |a| |
| |b| |
| b |
| c |
| |c| |
| |abc| |
| abc |
∴x的所有值组成的集合为{0,-4,4}.
故选:D.
| a |
| |a| |
| |b| |
| b |
| c |
| |c| |
| |abc| |
| abc |
| a |
| |a| |
| |b| |
| b |
| c |
| |c| |
| |abc| |
| abc |
| a |
| |a| |
| |b| |
| b |
| c |
| |c| |
| |abc| |
| abc |
| a |
| |a| |
| |b| |
| b |
| c |
| |c| |
| |abc| |
| abc |
| a |
| |a| |
| |b| |
| b |
| c |
| |c| |
| |abc| |
| abc |