荷重软化点高、导热性好的砖是(),用来砌焦炉炭化室墙。
A.粘土砖
B.高铝砖
C.硅砖
参考答案:C
排烟防火阀是安装在排烟系统管道上,在一定时间内能满足耐火稳定性和耐火完整性要求,起隔烟阻火作用的阀门。当管道内排出的烟气温度达到()℃时,阀门自动关闭。
A、100
B、200
C、180
D、280
We did the work ______, and as a result, we were taken in.
A.to their satisfaction
B.to their satisfied
C.satisfied
D.to their satisfy