单选题
(:PROBLEMSOLVE)The average (arithmetic mean) of |x| and x equals
A、
x if x > 0, and equals 0 if x≤ 0
B、
-x if x < 0, and equals 0 if x ≥ 0
C、
0, regardless of the value of x
D、
x, regardless of the value of x
E、
|x|, regardless of the value of x
【正确答案】
A
【答案解析】
提交答案
关闭