发现渣口有水流出，应检查渣口附近风口、冷却壁、水管等有水部件是否有水流向渣口，然后才能确定渣口是否损坏。
参考答案：对
J. R. Firth’s main approach to the notion of function in context was by means of concept system. People refer to his theory as ______ theory.
“开辟荆榛，千秋功业；驱除荷虏，一代英雄”。与该诗句相关的历史事件是（）
A.郑和下西洋
B.戚继光抗倭
C.郑成功收复台湾
D.康熙帝组织雅克萨之战
