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小升初奥数：一个长方体容器，长50厘米，宽40厘米，求浸湿长？
小升初奥数66/77
![小升初奥数：复杂约分计算[整数减分数]#数学思维](http://p3-sign.bdxiguaimg.com/tos-cn-p-0015/osBn95DAqFgfCrbYUVutCe8EAs6FIAmcAQgAdv~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2025011205030989D437744E81313C6084&requestFrom=704&version_code=80402&x-expires=1768165390&x-signature=8LEMAE8UT0l9JESYGXsqxE7MLmo%3D)
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