【单选题】
对于command1&&command2||command3下面表述正确的是:()。
A、当command1成功,command2失败时才执行command3
B、当command1、command2成功时才执行command3
C、当command1、command2失败时才执行command3
D、当command1失败,command2成功时才执行command3
A、当command1成功,command2失败时才执行command3
B、当command1、command2成功时才执行command3
C、当command1、command2失败时才执行command3
D、当command1失败,command2成功时才执行command3
A、Command1.Enabled=True B、Command1.Enabled=False C、Command1.Visible=True D、Command1.Visible=False
A、Frm1_Click()Cmd1_Click() B、Form_Click()Command1_Click() C、Frm1_Click()Command1_Click() D、Form_Click()Cmd1_Click()