∴當a>0、b>0、c>0時,x=
a |
|a| |
|b| |
b |
c |
|c| |
|abc| |
abc |
當a、b、c中有一個小于0時,不妨設a<0、b>0、c>0,
∴x=
a |
|a| |
|b| |
b |
c |
|c| |
|abc| |
abc |
當a、b、c中有兩個小于0時,不妨設a<0、b<0、c>0,
∴x=
a |
|a| |
|b| |
b |
c |
|c| |
|abc| |
abc |
當a<0、b<0、c<0時,x=
a |
|a| |
|b| |
b |
c |
|c| |
|abc| |
abc |
∴x的所有值組成的集合為{0,-4,4}.
故選: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 |