圆心在原点上与直线x+y﹣2=0相切的圆的方程为( )
x2+y2=2
医疗事故处理条例规定,医疗事故的责任人在事故中都存在()
A.故意
B.失职
C.过错
D.过失
E.失误
在窗体上画一个命令按钮和两个文本框,其名称分别为Command1、Text1和Text2,然后编写如下程序:Dim S1 As String,S2 As StringPrivate Sub Form_Load()Text1.Text=""Text2.Text=""End SubPrivate Sub Textl_KeyDown(KeyCode As Integer,Shift As Integer)S2=S2&Chr(KeyCode) End Sub Private Sub Textl_KeyPress(KeyAscii As Integer)S1=S1&Chr(KeyAscii)End SubPrivate Sub Command1_Click()Textl.Text=S2Text2.Text=S1S1=""S2=""End Sub程序运行后,在Text1中输入"abc",然后单击命令按钮,在文本框Text1和Text2中显示的内容分别为【 】
A.abc和ABC
B.abc和abc
C.ABC和abc
D.ABC和ABC