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计算:(3×10-52÷(3×10-12
人气:239 ℃ 时间:2020-04-11 23:15:10
解答
(3×10-52÷(3×10-12
=(9×10-10)÷(9×10-2
=(9÷9)×(10-10÷10-2
=10-8
=
1
108
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