处理高瓦斯矿井独头巷道火灾时，不能停风，要在能保持正常通风或大风量的条件下处理火灾。
参考答案：对
A．Let’s continue the talk over dinner at 9 o’clock tonight.
B．We have to work something out before 9 o’clock tomorrow.
C．I propose a break until 9 o’clock tomorrow morning.
D．I’m sure we’ll all calm down before 9 o’clock tomorrow morning.
压型钢板组合梁通常由哪几部分组成？各部分的主要作用是什么
