单选题If x= a/3+b/32+c/33, when a, b, and c are each equal to 0 or 1, then x could be each of the following EXCEPT ______.A1/27B1/9C4/27D2/9E4/9
单选题
If x= a/3+b/32+c/33, when a, b, and c are each equal to 0 or 1, then x could be each of the following EXCEPT ______.
A
1/27
B
1/9
C
4/27
D
2/9
E
4/9
参考解析
解析：
将a，b，c，分别赋值0，1代入计算可知，本题选D项。
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