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______.