在窗体上有一个文本框控件,名称为TxtTime:一个计时器控件,名称为Timerl,要求每一秒钟在文本框中显示一次当前的时间。程序为:Private Sub Timer1_ ________()TxtTimetext=TimeEnd Sub在下划线后应填入的内容是________。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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