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【单选题】

设区域D=(x,y)|x2+y2≤4,x≥0,y≥0,F(x)为D上的正值连续函数,A,B为常数,则
______.
A.ABπ

C、A+B)π

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根据网考网移动考试中心的统计,该试题:

2%的考友选择了A选项

30%的考友选择了B选项

14%的考友选择了C选项

54%的考友选择了D选项

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