题型:判断题 蒸汽网路中某一管道,通过流量Gt=5.0t/h,蒸汽的平均密度ρ=4.705kg/m3。室外高压蒸汽管径计算表如下:如果选用DN100管道,则其实际的比摩阻及流速值为()A.3655.4Pa/m,177m/sB.3655.4Pa/m,832.8m/sC.776.9Pa/m,37.6m/sD.776.9Pa/m,832.8m/s 查看答案