锅炉发生再燃烧时，应彻底通风，排除烟道内沉积的可燃物，然后点火。
参考答案：错
解析：锅炉发生再燃烧时，应立即停止锅炉运行，并严禁通风。
11、41、71、□，□中应填的数是[ ]
A．81
B．91
C．101
Julia,as well as other two boys, for having broken the rules in class.
A．punished
B．was punished
C．were punished
D．being punished
