光面冷却壁设置在高炉什么部位?其优点是什么?
参考答案:
设置安装在炉缸部位,其优点:
冷却效果好,散热性能强。
—What on earth are you doing here?
—Can't you see I'm trying to ____the garage ____ a recreation room. [ ]
A. transform; from
B. transform; into
C. change; into
D. turn; into
1,25-羟胆骨化醇的靶器官是()
A.皮肤、肝、肾
B.皮肤、肠、骨
C.肝、肠、肾
D.肾、肠、骨
E.肝、肾、骨