尝试Choice命令。自MSDOS 6.0以来，它就已经存在了，应该可以做到这一点。

使用/T参数指定超时（以秒为单位），使用/D参数指定默认选择并忽略所选选项。

如果用户在超时时间过去之前键入其中一个选择字符，可能会出现问题。部分解决方法是混淆情况——使用/N参数隐藏有效选项列表，并且在选项集中只有1个字符，这样用户在超时到期之前键入有效选项的可能性就更小了。

以下是Windows Vista上的帮助文本。我认为这在XP上是一样的，但看看XP计算机上的帮助文本来验证。

C:\>CHOICE /?

CHOICE [/C choices] [/N] [/CS] [/T timeout /D choice] [/M text]

Description:
    This tool allows users to select one item from a list
    of choices and returns the index of the selected choice.

Parameter List:
   /C    choices       Specifies the list of choices to be created.
                       Default list is "YN".

   /N                  Hides the list of choices in the prompt.
                       The message before the prompt is displayed
                       and the choices are still enabled.

   /CS                 Enables case-sensitive choices to be selected.
                       By default, the utility is case-insensitive.

   /T    timeout       The number of seconds to pause before a default
                       choice is made. Acceptable values are from 0 to
                       9999. If 0 is specified, there will be no pause
                       and the default choice is selected.

   /D    choice        Specifies the default choice after nnnn seconds.
                       Character must be in the set of choices specified
                       by /C option and must also specify nnnn with /T.

   /M    text          Specifies the message to be displayed before
                       the prompt. If not specified, the utility
                       displays only a prompt.

   /?                  Displays this help message.

   NOTE:
   The ERRORLEVEL environment variable is set to the index of the
   key that was selected from the set of choices. The first choice
   listed returns a value of 1, the second a value of 2, and so on.
   If the user presses a key that is not a valid choice, the tool
   sounds a warning beep. If tool detects an error condition,
   it returns an ERRORLEVEL value of 255. If the user presses
   CTRL+BREAK or CTRL+C, the tool returns an ERRORLEVEL value
   of 0. When you use ERRORLEVEL parameters in a batch program, list
   them in decreasing order.

Examples:
   CHOICE /?
   CHOICE /C YNC /M "Press Y for Yes, N for No or C for Cancel."
   CHOICE /T 10 /C ync /CS /D y
   CHOICE /C ab /M "Select a for option 1 and b for option 2."
   CHOICE /C ab /N /M "Select a for option 1 and b for option 2."

我编写了一个powerbasic程序wait.exe，在批处理文件中向它传递一个毫秒参数

wait 3000
system('c:/windows/system32/SnippingTool.exe')

EXE的代码：

FUNCTION PBMAIN()
  c$ = Command$
  s! = Val(c$)*1000
  Sleep s!         
END FUNCTION

我最简单的方法是：

下载Sleep.exehttp://www.sleepcmd.com/..exe文件应与您编写的程序位于同一文件夹中！

您可以使用VBScript，例如文件myscript.vbs：

set wsobject = wscript.createobject("wscript.shell")

do while 1=1
    wsobject.run "SnippingTool.exe",0,TRUE
    wscript.sleep 3000
loop

批处理文件：

cscript myscript.vbs %1

尝试Choice命令。自MSDOS 6.0以来，它就已经存在了，应该可以做到这一点。

使用/T参数指定超时（以秒为单位），使用/D参数指定默认选择并忽略所选选项。

如果用户在超时时间过去之前键入其中一个选择字符，可能会出现问题。部分解决方法是混淆情况——使用/N参数隐藏有效选项列表，并且在选项集中只有1个字符，这样用户在超时到期之前键入有效选项的可能性就更小了。

以下是Windows Vista上的帮助文本。我认为这在XP上是一样的，但看看XP计算机上的帮助文本来验证。

C:\>CHOICE /?

CHOICE [/C choices] [/N] [/CS] [/T timeout /D choice] [/M text]

Description:
    This tool allows users to select one item from a list
    of choices and returns the index of the selected choice.

Parameter List:
   /C    choices       Specifies the list of choices to be created.
                       Default list is "YN".

   /N                  Hides the list of choices in the prompt.
                       The message before the prompt is displayed
                       and the choices are still enabled.

   /CS                 Enables case-sensitive choices to be selected.
                       By default, the utility is case-insensitive.

   /T    timeout       The number of seconds to pause before a default
                       choice is made. Acceptable values are from 0 to
                       9999. If 0 is specified, there will be no pause
                       and the default choice is selected.

   /D    choice        Specifies the default choice after nnnn seconds.
                       Character must be in the set of choices specified
                       by /C option and must also specify nnnn with /T.

   /M    text          Specifies the message to be displayed before
                       the prompt. If not specified, the utility
                       displays only a prompt.

   /?                  Displays this help message.

   NOTE:
   The ERRORLEVEL environment variable is set to the index of the
   key that was selected from the set of choices. The first choice
   listed returns a value of 1, the second a value of 2, and so on.
   If the user presses a key that is not a valid choice, the tool
   sounds a warning beep. If tool detects an error condition,
   it returns an ERRORLEVEL value of 255. If the user presses
   CTRL+BREAK or CTRL+C, the tool returns an ERRORLEVEL value
   of 0. When you use ERRORLEVEL parameters in a batch program, list
   them in decreasing order.

Examples:
   CHOICE /?
   CHOICE /C YNC /M "Press Y for Yes, N for No or C for Cancel."
   CHOICE /T 10 /C ync /CS /D y
   CHOICE /C ab /M "Select a for option 1 and b for option 2."
   CHOICE /C ab /N /M "Select a for option 1 and b for option 2."

超时/t 1>nul

就像在1秒内暂停一样，你可以将时间延长到近100.000（99.999）秒。如果您连接到互联网，最好的解决方案是：

平1.1.1.1-n 1-w 1000>无

当你ping时，你的计数单位是毫秒，所以一秒钟就是1000毫秒。但是ping命令有点可疑，它在脱机机器上的工作方式不同。问题是，由于机器处于离线状态，它会感到困惑，它想ping一个网站/服务器/主机/ip，但它不能。所以我建议超时。祝你好运