火灾自动报警系统需经连续运行（）无故障后，才能视为合格并填写调试报告。
A.120h
B.100h
C.80h
D.60h
参考答案：A
It was ___ weather we had ever had in the past ten years.
A．worst
B．the worse
C．the worst
D．worse
散水
