粘土砖主要用于焦炉哪些部位（）
A.蓄热室封墙
B.小烟道
C.炉门衬砖
D.上升管衬砖
参考答案：A, B, C, D
.
. —I’m afraid I have to leave for New York tomorrow.
—_____
A．I’m afraid not.
B．Have a good journey.
C．Please do.
D．Why not go now?
峨眉山山脚处海拔500m，气温28℃，山顶海拔3100m，则山顶气温______．
