第27题: [单项选择]Foam extinguishes a fire by(). A. shutting off the air supply B. cooling the fuel to below ignition temperature C. dispersing the fuel D. removing the source of ignition 参考答案:A
第35题: [填空题]在菜单编辑器中建立一个菜单,其主菜单项的名称为mnuEdit,Visible属性为False,程序运行后,如果用鼠标右键单击窗体,则弹出与mnuEdit对应的菜单。以下是实现上述功能的程序,请填空。 Private Sub Form______ (Button As Integer, Shift As Integer,X As Single, Y As Single) If Button=2 Then ______ mnuEdit End If End Sub 参考答案:MouseDown PopupMenu 答案解析:[解析] 本题考查鼠标事件与PopupMenu方法。由于要触发鼠标单击事件,可以用MouseDown或 MouseUp,分别表示鼠标的按下与放开。PopupMenu方法用来设置弹出式菜单。后面直接接所