下面代码的输出结果是()。def fact(n): s=1 for i in range(1, n+1): s*=i return s sum=0 for i in range(4): sum+=fact(i) print(sum) A . 10 B . 6 C . 9 D . 3 答案:AI can hardly hear the radio. Would you please ________?
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A.turn it onB.turn it off
C.turn it upD.turn it down