A．对 B．错方角柜柜身四边和腿足皆为曲圆，四条腿全用圆料制作。……

未分类题在窗体上画一个名称为Command1的命令按钮，然后编写如下事件过程：Private Sub Command 1_ Click() Static y As Integer CIs For i=0 To 2 x=x +y y=y +3 Next Print x, yEnd Sub程序运行后，连续二次单击Command1按钮后，窗体上显示的是______。A.9 9B.36 18C.30 12D.63 27

未分类题编写如下事件过程：Private Sub Form_ KeyDown(KeyCode As Integer，Shift As Integer) If (Button And 3)= 3 Then Print 'AAAA' End IfEnd Sub程序运行后，为了在窗体上输出“AAAA”，应按下的鼠标键为______。D.按什么键都不显示

单项选择题RL串联电路的功率因数不一定小于1。 A、正确 B、错误

未分类题一台蒸发量D=4 t h的锅炉，过热蒸汽绝对压力P=1.37 MPa，过热蒸汽温度t=350℃，给水温度tgs=20℃。在没装省煤器时测得排烟损失q2=15%，燃料耗量B=950 kg h，收到基低位发热量Qar,net,p=18 841 kJ kg；加装省煤器后，排烟损失降为q2'=8.5%。假设其他各热损失不变，则安装省煤器后节煤量为( )kg h。A.70B.76C.80D.86

单项选择题A company has over absorbed fixed production overheads for the period by 8 per unit and is based on the normal level of activity of 5,000 units. Actual production was 4,500 units. What was the actual fixed production overheads incurred for the period?