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4.2×0.34÷(1.4×0.34)
人气:219 ℃ 时间:2020-06-14 01:12:55
解答
4.2×0.34÷(1.4×0.34),
=4.2×0.34÷0.476,
=1.428÷0.476,
=3.
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