(A)鍋爐供水系統(tǒng)故障 (B)安全閥失效 (C)鍋爐爐墻倒塌 (D)A、B、C均正確
(A)先打開放空,調(diào)整燃燒 (B)關(guān)閉燃料閥 (C)直接停掉鼓風(fēng)機(jī)和柱塞泵 (D)待溫度降下來后,將爐水放凈
(A)10min (B)15min (C)20min (D)30min