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Warning: fclose() expects parameter 1 to be resource, bool given in /www/wwwroot/www.wendadaohang.com/inc/function.php on line 2475 两堆货物共180吨,甲堆运走4／1,乙堆运走40吨,剩下的两堆重量相同．原来两堆货物各有多少吨? - 11问答网