用瑞星发现好多机子有rofl.sys ,病毒名为bootkit.agent.dg
之后局域网内不能访问，上网查了好多资料说的都没具休的杀除方法，
高手们请来发问请我帮解决，在线等。。。。。。。。。。。。。。。。。。。。。。。

http://forum.ikaka.com/topic.asp?board=28&artid=6979213第4楼下载System Repair Engineer导出全部日志
Rootkit.agent.dg吧?

【回复“mopery”的帖子】
System Repair Engineer 2.0.21.505 (2.0 RC 2)
Smallfrogs (http://www.KZTechs.com)

Windows 2000 Professional Service Pack 4 (Build 2195)
- 管理权限用户 - 完整功能

以下内容被选中：
    所有的启动项目（包括注册表、启动文件夹、服务等）
    浏览器加载项
    正在运行的进程（包括进程模块信息）
    文件关联


启动项目
注册表
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
    <ctfmon.exe><ctfmon.exe>  [Microsoft Corporation]
[HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows]
    <load><>  []
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
    <Synchronization Manager><mobsync.exe /logon>  [Microsoft Corporation]
    <NvCplDaemon><RUNDLL32.EXE NvQTwk,NvCplDaemon initialize>  []
    <SoundMan><soundman.exe>  [Avance Logic, Inc.]
    <IMSCMig><C:\PROGRA~1\COMMON~1\MICROS~1\IME\IMSC40A\IMSCMIG.EXE /Preload>  [Microsoft Corporation]
    <YLive.exe><C:\PROGRA~1\Yahoo!\ASSIST~1\YLive.exe>  [ ]
    <yassistse><"C:\PROGRA~1\Yahoo!\Assistant\yassistse.exe">  [Yahoo!]
    <RavTask><"C:\Program Files\Rising\Rav\RavTask.exe" -system>  [Beijing Rising Technology Co., Ltd.]
    <TkBellExe><"C:\Program Files\Common Files\Real\Update_OB\realsched.exe"  -osboot>  [RealNetworks, Inc.]
    <AddrPlus3><C:\PROGRA~1\TENCENT\Adplus\stup.exe C:\PROGRA~1\TENCENT\Adplus\Adplus1.dll Rundll32>  [Tencent]
    <stup.exe><C:\PROGRA~1\TENCENT\Adplus\stup.exe>  [Tencent]
    <MS-4011 Memory Patch><C:\Documents and Settings\Administrator.ZHY\桌面\新建文件夹\震荡波专杀.exe -Patch>  [Beijing Rising Tech. Co., Ltd.]
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
    <shell><Explorer.exe>  [Microsoft Corporation]
    <Userinit><userinit.exe,>  [Microsoft Corporation]
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Windows]
    <AppInit_DLLs><>  []
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks]
    <{32CD708B-60A7-4C00-9377-D73EAA495F0F}><C:\WINNT\system32\RavExt.dll>  [Beijing Rising Technology Co., Ltd.]
    <{54D9498B-CF93-414F-8984-8CE7FDE0D391}><C:\Program Files\ewido\security suite\shellhook.dll>  []

【回复“hedycola”的帖子】

启动文件夹
服务
[Logical Disk Manager Administrative Service / dmadmin]
  <C:\WINNT\System32\dmadmin.exe /com><VERITAS Software Corp.>
[ewido security suite control / ewido security suite control]
  <C:\Program Files\ewido\security suite\ewidoctrl.exe><ewido networks>
[ewido security suite guard / ewido security suite guard]
  <C:\Program Files\ewido\security suite\ewidoguard.exe><ewido networks>
[NVIDIA Driver Helper Service / NVSvc]
  <C:\WINNT\System32\nvsvc32.exe><NVIDIA Corporation>
[Rising Personal Firewall Service / RfwService]
  <c:\program files\rising\rfw\rfwsrv.exe><Beijing Rising Technology Corporation Limited>
[Rising Process Communication Center / RsCCenter]
  <"C:\Program Files\Rising\Rav\CCenter.exe"><Beijing Rising Technology Co., Ltd.>
[RsRavMon Service / RsRavMon]
  <"C:\Program Files\Rising\Rav\Ravmond.exe"><Beijing Rising Technology Co., Ltd.>
[Task Manager / Task Manager]
  <"C:\WINNT\taskmrg.exe"><Microsoft Corporation (TM)>

浏览器加载项
[Tencent Browser Helper]
  {0C7C23EF-A848-485B-873C-0ED954731014} <C:\Program Files\TENCENT\Adplus\SSAddr.dll, Tencent>
[Yahoo!Photo]
  {33BBE430-0E42-4f12-B075-8D21ACB10DCB} <C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yphtb.dll, Yahoo! China>
[AntiFish Class]
  {38928D50-8A48-44C2-945F-D2F23F771410} <C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yangling.dll, Yahoo.>
[雅虎助手]
  {406F94F0-504F-4a40-8DFD-58B0666ABEBD} <C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yasbar.dll, Yahoo!>
[QQBrowserHelperObject Class]
  {54EBD53A-9BC1-480B-966A-843A333CA162} <C:\Program Files\Tencent\QQ\QQIEHelper.dll, 深圳市腾讯计算机系统有限公司>
[DragSearch BHO]
  {62EED7C6-9F02-42f9-B634-98E2899E147B} <C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\YDRAGS~1.DLL, >
[QQ]
  {c95fe080-8f5d-11d2-a20b-00aa003c157b} <C:\Program Files\Tencent\QQ\QQ.EXE, TENCENT>
[QQIEFloatBarCfgCmd Class]
  {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} <C:\Program Files\Tencent\QQ\QQIEHelper.dll, 深圳市腾讯计算机系统有限公司>
[电台(&R)]
  {8E718888-423F-11D2-876E-00A0C9082467} <C:\WINNT\System32\msdxm.ocx, Microsoft Corporation>
[雅虎助手]
  {406F94F0-504F-4a40-8DFD-58B0666ABEBD} <C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yasbar.dll, Yahoo!>
[WUWebControl Class]
  {6414512B-B978-451D-A0D8-FCFDF33E833C} <C:\WINNT\System32\wuweb.dll, Microsoft Corporation>
[WebDigiNet Control]
  {9E265649-6E0E-4EEA-9F49-DAE0801440CF} <C:\WINNT\system32\WEBDIG~1.OCX, Kodicom>
[Shockwave Flash Object]
  {D27CDB6E-AE6D-11CF-96B8-444553540000} <C:\WINNT\system32\Macromed\Flash\Flash8.ocx, Macromedia, Inc.>
[导出到 Microsoft Office Excel(&X)]
  <res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000, N/A>
[添加到雅虎订阅(&Y)]
  <res://C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yrss.dll/YRSSMENUEXT, N/A>
[雅虎搜索]
  <res://C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yasbar.dll/246, N/A>

正在运行的进程
[PID: 136][\SystemRoot\System32\smss.exe]  <Microsoft Corporation><5.00.2195.6601>
[PID: 164][\??\C:\WINNT\system32\csrss.exe]  <Microsoft Corporation><5.00.2195.6601>
[PID: 184][\??\C:\WINNT\system32\winlogon.exe]  <Microsoft Corporation><5.00.2195.6970>
[PID: 212][C:\WINNT\system32\services.exe]  <Microsoft Corporation><5.00.2195.6700>
    [C:\WINNT\system32\dmserver.dll]  <VERITAS Software Corp.><2195.6605.297.3>
[PID: 224][C:\WINNT\system32\lsass.exe]  <Microsoft Corporation><5.00.2195.6902>
[PID: 396][c:\program files\rising\rfw\rfwsrv.exe]  <Beijing Rising Technology Corporation Limited><3, 1, 0, 36>
    [c:\program files\rising\rfw\Rfwdrv.dll]  <Beijing Rising Technology Corporation Limited><3, 0, 1, 5>
    [c:\program files\rising\rfw\rfwrule.dll]  <Beijing Rising Technology Corporation Limited><3, 1, 0, 0>
    [c:\program files\rising\rfw\rfwlog.dll]  <Beijing Rising Technology Corporation Limited><3, 1, 0, 2>
[PID: 408][C:\WINNT\system32\svchost.exe]  <Microsoft Corporation><5.00.2134.1>
[PID: 468][C:\Program Files\Rising\Rav\CCenter.exe]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 3>
[PID: 484][C:\Program Files\Rising\Rav\Ravmond.exe]  <Beijing Rising Technology Co., Ltd.><18, 0, 1, 22>
    [C:\Program Files\Rising\Rav\BWList.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 18>
    [C:\Program Files\Rising\Rav\RsCommX.dll]  <rising><18, 0, 0, 1>
    [C:\Program Files\Rising\Rav\RSAPPMGR.DLL]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 2>
    [C:\Program Files\Rising\Rav\CfgDll.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 10>
    [C:\Program Files\Rising\Rav\RSCOMMON.DLL]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 4>
    [C:\Program Files\Rising\Rav\RsLog.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 20>
    [C:\Program Files\Rising\Rav\HOOKSYS.dll]  <Rising><18, 1, 0, 9>
    [C:\Program Files\Rising\Rav\Scanner.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 30>
    [C:\Program Files\Rising\Rav\libload.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 10>
    [C:\Program Files\Rising\Rav\VirusLib.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 10>
    [C:\Program Files\Rising\Rav\regmon.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 6>
    [C:\Program Files\Rising\Rav\HookWeb.dll]  <rising><18, 0, 0, 1>
    [C:\Program Files\Rising\Rav\MemMon.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 9>
    [C:\Program Files\Rising\Rav\expscan.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 4>
    [C:\Program Files\Rising\Rav\mPorts.dll]  <Beijing Rising Technology Co., Ltd.><4, 0, 0, 3>
    [C:\Program Files\Rising\Rav\MailMon.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 5>
    [C:\Program Files\Rising\Rav\SpamEng.dll]  <N/A><18, 0, 0, 6>
    [C:\Program Files\Rising\Rav\engine.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 28>
    [C:\Program Files\Rising\Rav\PostTrt.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 9>
    [C:\Program Files\Rising\Rav\UnExe.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 11>
    [C:\Program Files\Rising\Rav\ScanExec.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 11>
    [C:\Program Files\Rising\Rav\ScanEx.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 10>
    [C:\Program Files\Rising\Rav\NvFile.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 7>
    [C:\Program Files\Rising\Rav\ScanMac.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 7>
    [C:\Program Files\Rising\Rav\ScanSct.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 15>
    [C:\Program Files\Rising\Rav\Unpacker.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 3>
    [C:\Program Files\Rising\Rav\RsStore.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 2>
[PID: 528][C:\WINNT\system32\spoolsv.exe]  <Microsoft Corporation><5.00.2195.7059>
[PID: 560][C:\WINNT\System32\svchost.exe]  <Microsoft Corporation><5.00.2134.1>
[PID: 576][C:\Program Files\ewido\security suite\ewidoctrl.exe]  <ewido networks><3, 0, 0, 1>
    [C:\Program Files\ewido\security suite\lang.dll]  <privat><1, 0, 0, 1>
[PID: 628][C:\WINNT\System32\nvsvc32.exe]  <NVIDIA Corporation><6.13.10.2311>
[PID: 664][C:\WINNT\system32\MSTask.exe]  <Microsoft Corporation><4.71.2195.6920>
[PID: 848][C:\Program Files\Rising\Rav\RavStub.exe]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 13>
    [C:\Program Files\Rising\Rav\RsCommX.dll]  <rising><18, 0, 0, 1>
    [C:\Program Files\Rising\Rav\RSCOMMON.DLL]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 4>
[PID: 928][C:\WINNT\System32\WBEM\WinMgmt.exe]  <Microsoft Corporation><1.50.1085.0100>
[PID: 948][C:\WINNT\system32\svchost.exe]  <Microsoft Corporation><5.00.2134.1>
[PID: 1060][C:\WINNT\Explorer.EXE]  <Microsoft Corporation><5.00.3700.6690>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yhelper.dll]  <><2, 0, 1, 1018>
    [C:\WINNT\Downloaded Program Files\Juls.dll]  <Tencent><4, 0, 8, 80>
    [C:\WINNT\Downloaded Program Files\Kjtm.dll]  <Tencent><4, 0, 8, 80>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\yaLive.dll]  <><2, 0, 4, 1030>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yalliveex.dll]  < ><2, 0, 1, 1007>
    [C:\WINNT\system32\RavExt.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 19>
    [C:\Program Files\ewido\security suite\shellhook.dll]  <N/A><N/A>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yphtb.dll]  <Yahoo! China><1, 1, 3, 1035>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yasbar.dll]  <Yahoo!><2, 1, 8, 1048>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\YDRAGS~1.DLL]  <><1, 2, 7, 1006>
[PID: 1112][c:\program files\rising\rfw\RfwMain.exe]  <Beijing Rising Technology Corporation Limited><3, 1, 0, 19>
    [c:\program files\rising\rfw\RsGuiLib.dll]  <Beijing Rising Technology Co., Ltd.><17, 0, 0, 40>
    [c:\program files\rising\rfw\RSCOMMON.DLL]  <Beijing Rising Technology Co., Ltd.><17, 0, 0, 17>
    [c:\program files\rising\rfw\PngDll.dll]  <Rising><17, 0, 0, 2>
[PID: 1192][C:\WINNT\soundman.exe]  <Avance Logic, Inc.><5, 0, 0, 0>
[PID: 1216][C:\PROGRA~1\Yahoo!\ASSIST~1\YLive.exe]  < ><2, 0, 0, 1002>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yhelper.dll]  <><2, 0, 1, 1018>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\yaLive.dll]  <><2, 0, 4, 1030>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yalliveex.dll]  < ><2, 0, 1, 1007>
[PID: 1224][C:\PROGRA~1\Yahoo!\Assistant\yassistse.exe]  <Yahoo!><1, 0, 1, 1001>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yhelper.dll]  <><2, 0, 1, 1018>
    [C:\PROGRA~1\Yahoo!\Assistant\shell\yAssecblk.dll]  <Yahoo><1, 0, 2, 1002>
    [C:\PROGRA~1\Yahoo!\Assistant\shell\yAsMenu.dll]  <Yahoo><1, 0, 1, 1006>
    [C:\PROGRA~1\Yahoo!\Assistant\shell\yIEAngel.dll]  <Yahoo><1, 0, 1, 1001>
    [C:\PROGRA~1\Yahoo!\Assistant\shell\yMenuInfo.dll]  <Yahoo><1, 0, 0, 2>
[PID: 1232][C:\Program Files\Rising\Rav\RavTask.exe]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 22>
    [C:\Program Files\Rising\Rav\RSCOMMON.DLL]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 4>
    [C:\Program Files\Rising\Rav\RSAPPMGR.DLL]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 2>
    [C:\Program Files\Rising\Rav\CfgDll.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 10>
    [C:\Program Files\Rising\Rav\RsCommX.dll]  <rising><18, 0, 0, 1>
    [C:\WINNT\Downloaded Program Files\Juls.dll]  <Tencent><4, 0, 8, 80>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yhelper.dll]  <><2, 0, 1, 1018>
[PID: 1280][C:\WINNT\system32\ctfmon.exe]  <Microsoft Corporation><1.00.2409.34 built by: Lab06_N>
    [C:\WINNT\Downloaded Program Files\Juls.dll]  <Tencent><4, 0, 8, 80>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yhelper.dll]  <><2, 0, 1, 1018>
[PID: 816][C:\Program Files\Rising\Rav\Ravmon.exe]  <Beijing Rising Technology Co., Ltd.><18, 0, 1, 19>
    [C:\Program Files\Rising\Rav\RsGuiLib.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 24>
    [C:\Program Files\Rising\Rav\BWList.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 18>
    [C:\Program Files\Rising\Rav\RSAPPMGR.DLL]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 2>
    [C:\Program Files\Rising\Rav\CfgDll.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 10>
    [C:\Program Files\Rising\Rav\RSCOMMON.DLL]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 4>
    [C:\Program Files\Rising\Rav\RsCommX.dll]  <rising><18, 0, 0, 1>
    [C:\Program Files\Rising\Rav\PngDll.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 5>
    [C:\WINNT\Downloaded Program Files\Juls.dll]  <Tencent><4, 0, 8, 80>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yhelper.dll]  <><2, 0, 1, 1018>
[PID: 768][C:\Program Files\Microsoft Office\OFFICE11\EXCEL.EXE]  <Microsoft Corporation><11.0.5612>
    [C:\WINNT\Downloaded Program Files\Juls.dll]  <Tencent><4, 0, 8, 80>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yhelper.dll]  <><2, 0, 1, 1018>
    [C:\Program Files\Rising\Rav\RsPlugIn.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 1>
    [C:\Program Files\Rising\Rav\RsGuiLib.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 24>
    [C:\Program Files\Rising\Rav\PngDll.dll]  <Beijing Rising Technology Co., Ltd.><18, 0, 0, 5>
    [C:\WINNT\system32\spool\DRIVERS\W32X86\3\SDNT5UI.DLL]  <Zenographics, Inc.><5.60.709.0>
    [C:\WINNT\system32\spool\DRIVERS\W32X86\3\SDDM32.DLL]  <Zenographics, Inc.><5, 60, 2629, 0>
    [C:\WINNT\system32\spool\DRIVERS\W32X86\3\ZSPOOL.dll]  <Zenographics, Inc.><5, 51, 709, 0>
    [C:\WINNT\system32\spool\DRIVERS\W32X86\3\ZGDI32.dll]  <Zenographics, Inc.><5, 60, 709, 0>
    [C:\WINNT\system32\spool\DRIVERS\W32X86\3\ZTAG32.dll]  <Zenographics, Inc.><5, 60, 1210, 0>
    [C:\WINNT\system32\spool\DRIVERS\W32X86\3\SDDMUI.DLL]  <Zenographics, Inc.><6, 1, 524, 0>
    [C:\WINNT\system32\spool\DRIVERS\W32X86\3\SR32.dll]  <Zenographics, Inc.><6, 1, 520, 1>
    [C:\WINNT\system32\spool\DRIVERS\W32X86\3\IMFNT5.DLL]  <Zenographics, Inc.><0, 3, 3508, 0>
    [C:\WINNT\system32\spool\DRIVERS\W32X86\3\Imf32.dll]  <Zenographics, Inc.><5, 60, 1204, 0>
[PID: 1416][C:\Documents and Settings\Administrator.ZHY\桌面\SREng2\SREng.exe]  <Smallfrogs Studio><2.0.21.505>
    [C:\WINNT\Downloaded Program Files\Juls.dll]  <Tencent><4, 0, 8, 80>
    [C:\PROGRA~1\Yahoo!\ASSIST~1\Yhelper.dll]  <><2, 0, 1, 1018>
    [C:\Documents and Settings\Administrator.ZHY\桌面\SREng2\Plugins\SREngPluginDemo.SRE]  <Smallfrogs Studio><1, 1, 1, 0>

文件关联
.TXT  OK. [%SystemRoot%\system32\NOTEPAD.EXE %1]
.EXE  OK. ["%1" %*]
.COM  OK. ["%1" %*]
.PIF  OK. ["%1" %*]
.REG  OK. [regedit.exe "%1"]
.BAT  OK. ["%1" %*]
.SCR  OK. ["%1" /S]
.CHM  OK. ["C:\WINNT\hh.exe" %1]
.HLP  OK. [%SystemRoot%\System32\winhlp32.exe %1]
.INI  OK. [%SystemRoot%\System32\NOTEPAD.EXE %1]
.INF  OK. [%SystemRoot%\System32\NOTEPAD.EXE %1]
.VBS  OK. [%SystemRoot%\System32\WScript.exe "%1" %*]
.JS  OK. [%SystemRoot%\System32\WScript.exe "%1" %*]
.LNK  OK. [{00021401-0000-0000-C000-000000000046}]

==================================

局域网内的一台发现有rofl.sys的报告，跪求帮忙看看，说说解决方法~~~谢谢

不下班在线等待啊，。。。。。。。。

没高手帮忙么？。。。。。等啊等