高炉有几种冷却方式?
参考答案:
(1)工业水冷却;
(2)汽化冷却;
(3)软水闭路循环冷却;
(4)炉壳喷水冷却。
He speaks English American, so we all believe that he has stayed in America for many years. [ ]
A. as good as
B. worse than
C. as well as
某楼层为梁板结构,单向板受力,跨度为4m,支于两边简支梁上。梁的跨度为5m。装修时在板上铺设水磨石地面,水磨石重度γ=30KN/m3,装修厚度为0.05m。
在梁上开洞将削弱梁的( ),降低梁的承载能力。
A.强度 B.力度 C.截面 D.支撑