["【День за днем, Задание №7177】2218年4月17日",,"Эта ветка последняя редакция была сделана绿莲花于 228-4-1777 114:46 【День за днем Задание №7177】218年4月17日 Р预热器的作用是回收余热。 СУТКИ ВОПРОСtion（） Просим решить в течение двух дней。",,"Д预热器的作用是回收余热。 Ответ：Правнo"

2018-04-17View Original

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本帖最后由绿莲花于 2018-4-17 11:46 编辑【每日一题第107题】2018年4月17日空气预热器的作用是回收余热。判断题（）请在两日内作答。

Reply #22018-04-17

空气预热器的作用是回收余热。答：正确

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