实际测试使用其提供的beepxp.sys for NTVDM speaker可正常发出声音 unit Unit2;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;type TForm2 = class(TForm) Button1: TButton; Button2: TButton; Button3: TButton; Button4: TButton; Button5:...