食堂运来一批煤，计划每天烧0.2吨，可以烧30天．由于改进炉灶，实际每天比计划节省煤0.05吨，这些煤实际可以烧_1天_刷题宝

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食堂运来一批煤，计划每天烧0.2吨，可以烧30天．由于改进炉灶，实际每天比计划节省煤0.05吨，这些煤实际可以烧____天

上一题下一题 0.0难度选择题更新时间:2020-03-21 04:12:44

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