【单选题】
Obviously these are all factors affecting smooth operation, but the underlying problem is still to be identified.
A.operational
B.fundamental
C.operating
D.underneath
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根据网考网移动考试中心的统计,该试题:
35%的考友选择了A选项
64%的考友选择了B选项
0%的考友选择了C选项
1%的考友选择了D选项