If not support to check for updates function, not display the menu item named "Checks for update" on Classic GUI and on Explorer window.
如果不支持检查升级功能，在经典GUI界面和浏览窗口界面不显示“检查升级”的菜单选项。
If not support to check for updates function, not display the menu item named "Checks for update" on Classic GUI and on Explorer window.
如果不支持检查升级功能，在经典GUI界面和浏览窗口界面不显示“检查升级”的菜单选项。
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