无焰燃烧是指()A、空气和煤气予先进行混合 B、空气和煤气进行予热其温度大于500℃ 发布时间:2017-10-06 01:11 │ 来源:www.tikuol.com 题型:单项选择题 问题: 无焰燃烧是指()A、空气和煤气予先进行混合B、空气和煤气进行予热其温度大于500℃C、空气和煤气进行予先混合,分别送入燃烧室D、空气消耗系数一定大于1
题型:单项选择题 以下程序运行后,单击命令按钮,窗体显示的结果是 ______。 Private Function p1(x As Integer,y As Integel,z As Integer)p1=2*x+y+3*z End Function Private Function p2(x As Integer,y As Integer,z As Integer)p2=p1(2,y,x)+x End Function Private SubCommandl_Click()Dim a As IntegerDim b As IntegerDim c As Integera=2:b=3:c=4Print p2(c,b,A. End SubA) 19B.21C.22D.23 查看答案